Mimo noma example. two-user IRS-MIMO-NOMA network was investigated in [14].

Mimo noma example b The users are clustered Feb 15, 2024 · Moreover, they handle nonlinearities and interference, making them suitable for the challenging interference-limited scenarios of M-MIMO-NOMA, ultimately improving the spectral efficiency, user experience, and overall efficiency of the communication system. Moreover, we demonstrated the application of the NOMA simulator for different simulation scenarios through examples. As multiple techniques can achieve multi-stream beam-forming coding diversity, the use of MIMO techniques brings flexible dimension for performance improvements. We take full advantage of the ability of DNNs to process high-dimensional data. As shown in [7], this differ- Dec 1, 2022 · In recent times, several NOMA solutions have been investigated to solve the complex received data separation of all users [11]–[15], which can be divided into two main categories, one approach is power-domain NOMA [16] and another is code-domain NOMA [17]–[19]. Aug 21, 2020 · For example, the authors of [55] optimized the uplink and downlink power allocation iteratively using BCD for SE maximization; for a beamspace MIMO-NOMA system, a BCD algorithm was proposed for Jan 21, 2020 · Representative numerical examples are presented along with insightful discussions. Also, MIMO-NOMA with proposed clustering performs better than MIMO-NOMA without clustering for average transmit SNR greater than 113 dB and it performs significantly better than MIMO-NOMA using gain based clustering with S = 2, 3, and 6. That is, U1 is the weak user and U2 is the strong user. The sample collection commands and power allocation may affect the AoI and energy consumption of the system. In [4], Wang et al. Because the label is not in the traditional form, but the group one-hot encoding, the output data adopt the soft-decision form with the sigmoid function ( 7 ). By relaxing In this letter, we investigate the impact of non-reciprocities in cell-free massive MIMO with non-orthogonal multiple access (NOMA). Jan 20, 2024 · A single-cell transceiver M-MIMO-NOMA scheme is considered in this paper, where the base station is equipped with for example, MIMO spatial layers and . the employment of orthogonal multiple access (OMA) is always preferable than NOMA. RELATED WORK In this subsection, we elaborate on recent related work on NOMA, simultaneous wireless information and power VOLUME 12, 2024 Illustration of a 2×2 MIMO-NOMA-based VLC system with K users. In Section II, the massive MIMO-NOMA system model with multiple antenna sub-arrays at the BS is introduced. 2526, 2019. : GAUSSIAN MESSAGE PASSING FOR OVERLOADED MASSIVE MIMO-NOMA 211 Fig. Jun 2, 2019 · For example, the output layer structure of a 4 × 4 MIMO-NOMA system is shown in Figure 8. Fig. Oct 23, 2018 · Non-orthogonal multiple access (NOMA) has been recognized as a promising multiple access scheme to be used in the fifth generation (5G) wireless networks. Jul 15, 2023 · With the development of the Internet of Things (IoT), the number of devices will also increase tremendously. A two-user MIMO NOMA system is considered in , and the numerical analysis proves that the sum rates achieved by the MIMO NOMA system are superior to those achieved by MIMO OMA systems. Current NOMA SINR. 6. This is the first paper to compare the DoF of MU-MIMO, MIMO NOMA and RS in a MIMO setting as opposed to current comparisons as in [13] which are limited to MISO settings. Massive MIMO NOMA User Cluster SINR vs. MIMO-NOMA is to assign different beams to different users, as shown in Fig. To relieve the computational burden, random pairing is adopted in [7]. , “A deep learning approach for MIMO-NOMA downlink signal detection,” MDPI Sensors, vol. Here, we assume d1> d2 d 1> d 2. The comparison of signal interference noise ratio between massive MIMO NOMA cluster and current NOMA is being shown in Figure 8. A block of the O-NOMA system in detail is shown in Fig. 63% for NOMA-MSNR(2 × 25), with reference to the standard OMA-MIMO [OMA-MSNR(2 × 2)] and NOMA-MIMO [NOMA-MSNR(2 × 2)] system configurations, respectively (1 allocated subcarrier per MT, 1 tier system, B P m a x ← Building a model of Non-Orthogonal Multiple Access, using a research equipment WicoMM-T, captured BPSK Modulation having interfaced on MATLAB. in [5] theoretically proved that MIMO–NOMA can achieve a higher system capacity than conventional MIMO–OMA. Incorporating NOMA into a cell-free system results in higher throughput, massive connectivity with low latency, and high reliability with user fairness . “A deep learning approach for MIMO-NOMA Mar 11, 2023 · In MIMO-NOMA IoT system, the base station (BS) determines the sample collection requirements and allocates the transmission power for each IoT device. To improve the performance based on energy and spectral efficiency, the proposed technique is incorporated with a deep learning-based technique with a hybrid Meta-heuristic algorithm Nov 2, 2023 · Effective sharing of the communication channel among many users, or multiple access (MA) techniques, can play a vital role in meeting the diverse demands of low latency, high reliability, massive connectivity, better fairness, and high throughput. 19, no. Jun 6, 2021 · spectrum efficiency, non-orthogonal multiple access (NOMA) has been also applied in MIMO scenarios [16–18]. employed NOMA channel in MEC computation offloading system to minimize the energy consumption of all users where Lagrange dual was adopted to make decisions about task efficiency of random access and massive MIMO based grant-free protocols [8]–[11]. 1. Analytical results, such as an exact expression for the average sum-rate gap between MIMO Aug 13, 2024 · Massive multiple‐input multiple‐output and non‐orthogonal multiple access (MIMO‐NOMA) with low‐resolution analog‐to‐digital converters (ADCs) have been widely considered for the next‐generation wireless communication systems. This example shows how to build a MIMO control system using connect to build a dynamic system model representing a block diagram with both fixed components (Numeric Linear Time Invariant (LTI) Models) and tunable components (Control Design Blocks). SYSTEM MODEL FOR THE PROPOSED MIMO-NOMA FRAMEWORK Consider an MIMO-NOMA downlink (uplink) communication scenario in which a base station is communicating with multiple users. Assuming the downlink mode, and taking into consideration the impact of imperfect successive interference cancellation (SIC), an in-depth analytical analysis is carried out, in which closed-form expressions for the outage probability and ergodic rates Aug 7, 2023 · Non-orthogonal multiple access (NOMA) is an effective mechanism based on the multiple access technique. Similarly, in MIMO-NOMA with PHY layer security, SC-SIC cannot achieve secure capacity, and secret DPC (S-DPC) is the optimal solution [15], [16]. g. In this article, we introduce the basic concepts of MIMO-NOMA and summarize the key technical The downlink non-orthogonal multiple access (NOMA) transmissions from a holographic multi-input multi-output surface (HMIMOS) transmitter to multiple single-antenna users are investigated in this work. The 4 × 4 MIMO-NOMA-based VLC system model. In this context various MIMO-NOMA designs such as NOMA with beamforming and NOMA with spatial multiplexing have been introduced to obtain a trade-off between reception reliability and data rates. For example, let's consider TDMA+NOMA, as shown in Fig. A multi-cluster IRS-assisted MIMO-NOMA network was considered in [16]. MU–MIMO and MIMO NOMA increases. 28% for OMA-MSNR(2 × 25) and 13. 1 day ago · The article explores the potential of combining cell-free massive MIMO (CF-mMIMO) and non-orthogonal multiple access (NOMA) technologies for future wireless networks, such as 6G. Consider a 2 x 1 downlink MIMO system as shown in Fig. Jan 1, 2022 · In this paper, a new approach of wireless-powered multiple-input multiple-output non-orthogonal multiple access (WP-MIMO-NOMA) is designed by employing harvest-then-transmit protocol with joint Illustration of a 2×2 MIMO-NOMA-based VLC system with K users. employed NOMA channel in MEC computation offloading system to minimize the energy consumption of all users where Lagrange dual was adopted to make decisions about task This paper addresses multi-user multi-cluster massive multiple-input-multiple-output (MIMO) systems with non-orthogonal multiple access (NOMA). deep-learning communication mimo noma Jan 20, 2024 · Abstract With the increase in demand for mobile and Internet of Things devices, Orthogonal Multiple Access (OMA) cannot manage the maximum number of users. Quadrature amplitude modulation (QAM) complex modu - lated symbols have been considered in these simulations. To the best of our knowl-edge, this is the first study on the NOMA-aided CFmMIMO system for URLLC. For applications on the GSVD-MIMO scenario, the GSVD-NOMA scheme has been proposed in Jan 1, 2022 · PDF | In this work, we investigate the end-to-end performance of the uplink (U/L) non-orthogonal multiple access (NOMA) system based on the novel | Find, read and cite all the research you need Aug 1, 2023 · Since, wavelet-based NOMA has never been examined in a massive MIMO NOMA setup. For static and dynamic spectrum sharing scenarios, we assess the impacts of different spectrum sharing ratios, user ratios, MIMO configurations, mixed numerology profiles and traffic patterns on Jul 1, 2021 · Let us consider a CR-NOMA system as shown in Fig. Here, the MIMO-NOMA system is considered to deal with problems especially energy and spectral efficiency. For example, in SISO-NOMA, the SIC order usually depends directly on channel gains, e. , N u > N s. In this paper, we build a robust NOMA-VLC Network which exploits the MIMO technique. In this paper, a coded MIMO-NOMA system with capacity-approaching performance and low implementation complexity is proposed A few contributions have investigated IRSs in MIMO-NOMA schemes. In , Zhu et al. Mar 25, 2023 · In actual communication scenarios, the channel conditions for MIMO-NOMA-based V2I communication are uncertain, and the task arrival is random, leading to a highly complex environment for VEC systems. Our work focused on the spectral-efficient aircraft pairing-based massive MIMO NOMA for aeronautical communication. The proposed system can process the traditional MIMO-NOMA signal directly instead of implementing an SIC receiver. e. The detection Aug 26, 2023 · MIMO-NOMA receiver in terms of averag e SER and OP. 2. Jan 1, 2016 · Boundary of rate pairs achieved by a MIMO-NOMA and a MIMO-OMA scheme, where R k denotes the maximum achievable data rate for user (m, k). II. Feb 8, 2021 · Nonetheless, the existing power-domain mmWave MIMO-NOMA with narrow analog beams suffers from beam misalignments which deteriorate the data rates of the misaligned users as well as the system For example, our results show that the proposed system operating with SSAA outperforms conventional full array massive MIMO setups. MIMO‑NOMA systems Minghao Wang1,3, Xin Liu1,3, Fang Wang1, Yang Liu1*, Tianshuang Qiu2 & Minglu Jin2 Millimeter‑wave (mmWave) massive multiple‑input multiple‑output non‑orthogonal multiple Jun 11, 2020 · NOMA-based MU-MIMO systems have been extensively studied in the literature. We can summarize our contributions to this research as the following: • Enhance the spectral efficiency of aeronautical communication by employing massive MIMO NOMA. To this end, closed-form expressions for the users' spectral efficiency (SE) are derived assuming pilot contamination, imperfect successive interference cancellation (SIC), and non-reciprocal channels. The main contributions of this paper are summarized as follows: • We propose a NOMA-aided CFmMIMO Jul 8, 2022 · This paper presented a beamformed MIMO-NOMA, which integrates NOMA and beamformed MIMO to solve the basic limit where at the same time-frequency resources, only one device can be supplied in each beam. Dec 7, 2023 · Thus, the MIMO-NOMA IoT system should also keep its energy consumption low to prolong the working time of the IoT devices . In [27], Wang et al. V. It is unlike the conventional massive MIMO which requires N u << N s [3], [4]. In this context, non-orthogonal multiple access with multiple antennas, also known as multiple-input, multiple-output NOMA (MIMO-NOMA), is a Realization of MIMO-NOMA signal detection system based on **C. org multiple-output (MIMO) scheme with NOMA downlink communication systems [3]. Specifically, the authors in [23] have considered a multi-beam MIMO NOMA scenario, where multiple analog beams are formed for downlink transmission This example shows how hybrid beamforming is employed at the transmit end of a massive MIMO communications system, using techniques for both multi-user and single-user systems. . For example, NOMA-based grant-free transmission has been proposed in [12], where a Bayesian MIMO-NOMA combines multiple-input multiple-output (MIMO) and non-orthogonal multiple access (NOMA) techniques to address heterogeneous challenges, such as massive connectivity, low latency, and high reliability in the 5G cellular communication system and beyond. Multiple-input multiple-output (MIMO) is a technique used in wireless communication systems to improve the performance of the system by using multiple antennas at both the transmitter and the receiver. Within the NOMA user pair, one user is assumed to be deployed close to the base station, and the other is far away from the base station. Two aspects must be considered: First, as it is a MIMO system, the channel is characterized by a matrix, according to in this work. One of the crucial challenges in NOMA is the design of sophisticated interference cancellation techniques to improve performance. In this work, the IRS reflecting based systems in the presented simulation examples. have proved the superiority of MIMO NOMA over MIMO OMA in terms of capacity. - anagha-30/NOMA-for-5G 1. network Nov 20, 2021 · 4. Within the NOMA user pair, one user is assumed to be deployed close to the base station, and the other is far Dec 8, 2024 · Non-orthogonal Multiple Access (NOMA) provides use of the power domain to boost system efficiency in the spectrum. Nov 20, 2021 · For example, the distance is 600 meters; so, the power Massive MIMO-NOMA provides high throughput efficiency and system scalability to support a large number of devices with simple system A few contributions have investigated IRSs in MIMO-NOMA schemes. For example, Liu et al. Given the aforementioned research gap, this paper aims to design, analyze, and optimize the performance of a massive MIMO-NOMA network under the impact of residual error propagation from imperfect SIC. Therefore, it requires special attention to reduce the signalling overhead to escalate the spectral II. 11, pp. In this paper, we consider the scenario N > M 2 in order to implement the Dec 29, 2020 · Hybrid NOMA is a combination of NOMA with any OMA technique. In [19], MIMO-NOMA scheme has been proven to have performance close to that of the DPC with lower complexity. (a) Case I: v H m,2 H m,2 p m 2 = 1 2 v H m,1 H m,1 p m 2 . Lin et al. See full list on arxiv. This design is expected to ensure robustness and spectrum efficiency, as well as interoperability and compatibility with the existing wireless communication systems. , time/frequency/code), but assigning different powers to the multiplexed users, NOMA is able to improve the system performance and fairness. The application of multiple-input multiple-output (MIMO) technologies to NOMA is important since the use of MIMO provides additional degrees of freedom for further performance improvement. For example, the output layer structure of a 4 × 4 MIMO-NOMA system is shown in Figure 8. To exploit efficiently radio frequency energy sources surrounding NOMA transmitters for improved energy efficiency, NOMA networks further employ energy harvesting, which practically possesses nonlinear characteristic. 8. In this paper, we consider the stochastic task arrival, and the channel condition uncertainty caused by the MIMO-NOMA channel interference and the mobility of VUs, and propose a decentralized DRL-based power allocation scheme to optimize the long-term reward in VEC in terms of power consumption and latency. May 1, 2022 · In [12], the authors have highlighted the state-of-the-art research issues for NOMA-based MIMO, cognitive and cooperative wireless communication systems. It has been shown in the literature that non-orthogonal multiple access (NOMA) offers high multiplexing gains due to the simultaneous transfer of signals, and massive multiple-input–multiple-outputs (mMIMOs) offer high spectrum Dec 15, 2022 · p>The approach (Paradigm) presented hereafter was inspired by two basic ideas: assuming the MIMO-RIS-NOMA communication channel as a dispersive channel with fading and representing the later by Jan 23, 2019 · Block diagram of MIMO-NOMA system. Existing literature on MIMO NOMA has shown several advantages of using NOMA over orthogonal multiple access (OMA) in different aspects [17, 18]. In this work, the IRS reflecting Incorporating NOMA into a cell-free system results in higher throughput, massive connectivity with low latency, and high reliability with user fairness . A detailed Jun 11, 2020 · This paper addresses multi-user multi-cluster massive multiple-input-multiple-output (MIMO) systems with non-orthogonal multiple access (NOMA). As the number of antennas at the base the NOMA-aided CFmMIMO system and attempt to achieve optimal performance in terms of ASR by jointly optimizing power allocation and UE clustering. In this model, multiple users are allowed to concurrently broadcast their signals to a BS applying the same frequency resource, thereby increasing Jul 1, 2022 · In [21], optimal power allocation and the beamforming of a MIMO NOMA-based CR network, composed of a secondary base stations (BS) at the cell-edge of a primary BS, is investigated in the downlink mode to maximize the sum rate of each network. We apply the DL-based SIC from [35] to an uplink MIMO-NOMA system with BPSK modulation in a time selective Nakagami-m fading The MIMO-NOMA-DL system can estimate the characteristics of the MIMO Rayleigh fading channel and then decode the signal. Jun 2, 2017 · In MIMO-NOMA, users are paired into clusters, and NOMA is applied only among users in the same cluster. Dec 9, 2022 · Many wireless transmission scenarios: As the MIMO-NOMA scheme can easily be integrated with different modern MIMO technologies, such as cooperative multi-point (CoMP) technology and cloud radio networks , MIMO-NOMA is often implemented as a cooperative method either inside a single base station (BS) or across numerous BSs. Nov 10, 2020 · In this post, let's see how NOMA works in a simple MIMO network. proposed a multiuser MIMO (MU-MIMO) Aug 1, 2022 · For example, it is observed from Fig. Hence, the AoI and energy consumption are two important performance metrics of the MIMO-NOMA IoT system . strategy outperforms conventional full array massive MIMO-NOMA and MIMO-OMA systems operating in time diversity mode in all considered scenarios. proposed a multiuser MIMO (MU-MIMO) MEC system with the goal of optimizing the system cost, power consumption and latency. SCM ENC is the superposition coded modulation encoder and APP DEC is the a-posteriori probability decoder. D2D and MIMO-NOMA Technology in MEC and VEC Many works have considered the application of MIMO-NOMA and D2D technology in MEC and VEC systems. Download the MATLAB code here. The full benefit of MIMO-NOMA is achieved by a jointly design of user clustering, beamforming, power allocation, and SIC. constructed a VEC system based on MIMO-NOMA technology, in which vehicles can choose to process tasks either locally or offload them to the BS via the MIMO-NOMA channels. Most existing NOMA schemes rely on a key assumption that the users’ channel conditions are very different. To the best of our knowledge, we designed the first downlink MIMO-NOMA detecting system based on DL methods. A multi-cluster IRS-assisted MIMO-NOMA. Jan 1, 2020 · In this article, we propose a data-driven approach to group users in a Non-Orthogonal Multiple Access (NOMA) MIMO setting. In this paper, an overloaded massive MIMO-NOMA uplink, in which the number of users N u is larger than the number of antennas N s, is considered, i. However, Yue et al. [31] implemented AF-FG relaying. based systems in the presented simulation examples. By doing so, the QoS can be satisfied by calculating the beamformer-weights in a predefined order, commencing with In MIMO-NOMA, beamforming can be applied along with intra-cluster SIC to suppress both intra-cluster interference and inter-cluster interference. The energy efficiency of a two-user IRS-MIMO-NOMA network was investigated in [14]. It is also shown that the proposed power allocation outperforms conventional massive MIMO-NOMA setups operating with fixed power allocation strategies in terms of outage probability. I A. Most of the existing works on MIMO-NOMA design the BF weight vector, user clustering and power allocation techniques Jul 31, 2023 · Comparison between the proposed multi-group MIMO-NOMA scheme and a hybrid OMA-NOMA scheme considering various number of SIC stages with í µí± t = 2, í µí± r = 16, í µí± u = 12, C t = I A simple example with how hybrid beamforming is employed at the transmit end of a massive MIMO communications system. In this paper, we consider the scenario N > M 2 in order to implement the Feb 2, 2024 · Moreover, they handle nonlinearities and interference, making them suitable for the challenging interference-limited scenarios of M-MIMO-NOMA, ultimately improving the spectral efficiency, user experience, and overall efficiency of the communication system. The energy efficiency of a two-user IRS-MIMO-NOMA network was investigated in [17]. For single-cluster NOMA transmissions implemented by a single-RF-chain HMIMOS-based transmitter, the In this section, we review some work on D2D and MIMO-NOMA technology in MEC and VEC based on DRL. For instance, the work in [16] addressed a simple IRS-assisted MIMO-NOMA network, in which near and far users were paired to be served with NOMA with the aid of IRSs. Offloading in MIMO or NOMA MEC In recent years, many works have considered the MIMO or NOMA channel while designing the offloading scheme in MEC. Scheduling of users as another survivability technique of MIMO networks has recently been attracted in OIA. Specifically, we formulate user clustering as a multi-label Dec 1, 2021 · Integrating massive multiple input multiple output (MIMO) architecture and non-orthogonal multiple access (NOMA) technology is deemed as a promising solution to the gridlock of ever increasing demand in data rate via extending communication frequency to millimeter wave (mmWave) band and improving system spectrum efficiency. Within the NOMA user pair, one user is assumed to be deployed close to the base station, and the other is far Jul 31, 2020 · In the process, the authors found out that, a better performing MIMO -NOMA systems largely depends on a couple of factors such as number of users, channel conditions, and the signal processing Jul 8, 2021 · In order to improve the energy efficiency of such MIMO-NOMA system, multi-dimensional power allocation problem was formulated which is a mixed integer non-linear programming problem. , a user with smaller channel gain has a higher SIC order (i. Π i and Π −1 i denotes the interleaver and de Feb 28, 2024 · but now I get 0 errors! I mean literally everytime it decodes the bits correctly (too perfect as there must be some errors!) and the weird thing changing the channel coefficients in (F) or the number of users doesn't change the results, the only solution i can think of (not really a solution) is not to consider only best solution (first sample) but get many samples to account for BER. Second, more importantly, the use of NOMA alone is sufficient to support grant-free transmission. Jun 28, 2018 · In order to demonstrate the significant performance of MIMO-NOMA systems in terms of both OP and sum rate, as well as its superiority over MIMO-OMA, a special case, performance of single input multiple output- (SIMO-) NOMA network based on maximal ratio combining (MRC) diversity technique in terms of both OP and ergodic sum rate is investigated Mar 25, 2023 · In , Ding et al. 1. Both optimal design and performance analysis for MIMO-NOMA system have attracted intensive research interest in the existing literature. Structure of the Paper The rest of the paper is organized as follows. In addition, a special case with equal degrees of freedom and arbitrary PA for OMA is considered, Nov 15, 2024 · In the vast growing wireless communication system creating robust encoding mechanisms using space-time block codes (STBC) for mmWave massive MIMO to overcome uncertainty and ensure reliability is a critical concept to be covered. In [33], Ding et al. In this paper, we review the concept of combining downlink NOMA with MIMO May 4, 2020 · Multiple-input-multiple-output non-orthogonal multiple access (MIMO-NOMA), which incorporates the NOMA concept into MIMO, is an appealing technology to enhance system throughput and energy efficiency. In this system, the Apr 15, 2021 · MIMO schemes have been around for decades, for example, under the name spatial division multiple access (SDMA). In existing NOMA/MIMO-NOMA works, it is often assumed that decoding in SIC is in the MIMO-BC and dirty-paper coding (DPC) is the only optimal strategy [12]–[14]. Oct 22, 2024 · An example of a MIMO-NOMA 2 × 2 BPSK system shows the completed procedure. By overlapping radio resources (e. 1 illustrates the 2 × 2 MIMO-NOMA-VLC system with K performance of NOMA can be further enhanced by combining NOMA with MIMO (MIMO-NOMA) [17]–[23]. This letter explores the use of a new transceiver design and non-orthogonal Nov 1, 2023 · Nonorthogonal multiple access (NOMA) superposes several user signals for simultaneous transmission, considerably ameliorating spectral efficiency. our results show that the proposed dual-polarized MIMO-NOMA designs outperform conventional single-polarized Jan 1, 2022 · This paper presents a deep reinforcement learning-based beam-user selection and hybrid beamforming design for the multiuser massive multiple-input multiple-output (MIMO) non-orthogonal multiple Dec 1, 2020 · DL-based SIC outperforms MIMO NOMA in Nakagami-m fading channels. In [9], a cooperative relay NOMA with a massive MIMO system based on the geometric-based stochastic channel model is We refer to the technique of sequential interference cancellation applied to some NOMA formats, compare NOMA and Orthogonal Multiple Access (OMA) formats in terms of the capabilities they offer users and NOMA's significant contribution to Multiple-Input Multiple-Output (MIMO) technology and compare three basic NOMA formats in three different Dec 1, 2024 · The system model of MIMO NOMA uplink transmission is designed to boost the performance and competence of wireless communication networks by leveraging the advantages of MIMO technology and NOMA. For example, the optimal Jun 1, 2021 · As assumed, in our example of a cooperative MIMO-NOMA network with no direct downlink from the BS to user U 2, user U 1 is deployed as a relay to assist the weakest user U 2. MIMO uses multipath propagation and spatial diversity to address signal difficulties, such as fading or interference. These approaches offer benefits like increased data rates, reliability, and security, which can help meet the stringent requirements of next-generation networks. A. Based on the attained expressions, illustrative numerical Jan 5, 2024 · In the MIMO-NOMA scenario, many scholars have conducted extensive research. Sep 4, 2018 · The clustering models for downlink multi-user MIMO-NOMA with joint IA and PA optimization: a The users' effective channel gains are ordered in descending fashion. In some previous studies [30], [40], the authors deployed a DF protocol to forward signals. Then a combination of NOMA and MIMO technologies can take advantage in both space and power domains, further enhancing system spectrum efficiency. of NOMA with MIMO has emerged as a new paradigm for further capacity enhancement and massive connectivity support [1]. • To enlarge the performance gap between MIMO-NOMA and MIMO-OMA, user pairing is applied to NOMA. Oct 17, 2024 · I recommend exploring the following resource, which provides an example of how NOMA operates in a simple MIMO network. In addition, the performance of multi-carrier NOMA (MC-NOMA) was evaluated in the presence of AWGN, impulse noise, and intercell interference. 5 that the d-massive MIMO system increases capacity by 12. Index Terms Fairness maximization, imperfect SIC, massive MIMO, NOMA. demonstrate that MIMO-NOMA can achieve better out-age performance than conventional MIMO-OMA, even for users that suffer strong co-channel interference. In addition, multiple antennas the case of OMA can be released to user 2 in NOMA. multiple-output (MIMO) could achieve high capacity [4]. technique, NOMA. “A deep learning approach for MIMO-NOMA Dec 7, 2020 · two-user IRS-MIMO-NOMA network was in vestigated in [14]. Take the MIMO-NOMA schemes proposed in [10] and [12] as examples. 1 for a scenario in which spectrum resources are limited and obstacles (e. Non-orthogonal multiple access (NOMA) is a novel multi-user multiplexing scheme that improves spectral efficiency for LTE enhancements and 5G. AB - In this paper, we propose a novel successive sub-array activation (SSAA) diversity scheme for a massive multiple-input multiple-output (MIMO) system in combination with non-orthogonal multiple access (NOMA). An overview of MUD algorithms for the overloaded MIMO-NOMA system. Let d1 d 1 and d2 d 2 denote the distances of U1 and U2 respectively from the MIMO transmitter. Oct 22, 2024 · This paper addresses the challenges of maximum likelihood-based detection in future wireless communication networks that utilize massive MIMO systems by proposing an initial phase involving a QAOA-based maximum likelihood detection (MLD) method tailored for MIMO-NOMA systems. The MIMO-NOMA-DL system can estimate the characteristics of the MIMO Rayleigh fading channel and then decode the signal. Particularly, the use of NOMA can also improve energy and spectrum efficiencies compared with FDM, BM, and MO schemes. In this technique, the number of radio frequencies must be equivalent to the number of users. The transceiver design for a special case of MIMO-NOMA downlink transmission, in which each user has a single antenna and the base station has multiple antennas, MIMO-NOMA IoT system by determining the sample selection and power allocation. Orthogonal Frequency Division Multiple LIU et al. two-user IRS-MIMO-NOMA network was investigated in [14]. Recently, the combination of MIMO and NOMA, termed MIMO–NOMA, has attracted considerable attention. Aug 4, 2022 · The DL NOMA system results showed that using 64 × 64 MIMO enhanced the performance of BER, and SE, and solved the near–far user’s problem, where the performance of all users becomes close to each other’s for different transmitted power, distance, and power location coefficients parameters when compared without MIMO DL NOMA performance. For simplicity and without loss of generality, an indoor 2×2 MIMO-NOMAVLC system is considered in this work. The process of channel estimation and signal detection can be considered NOMA, as the newest member of the multiple access family, is envisioned to be an essential component of 5G mobile networks. For instance, the work in [13] addressed a simple IRS-assisted MIMO-NOMA network, in which near and far users were paired to be served with NOMA with the aid of IRSs. For applications on the GSVD-MIMO scenario, the GSVD-NOMA scheme has been proposed in MIMO-NOMA IoT system by determining the sample selection and power allocation. This article reviews the core concepts behind MIMO communication, Massive MIMO communication, space-time block codes, and rateless codes in the context of wireless Feb 27, 2024 · MIMO's primary objectives are to increase data throughput, optimize the utilization of available frequencies, and ensure optimal system performance. (MIMO) can exploit spatial resources to improve system performances [3, 4]. It is non-trivial to obtain the optimal user pairing, since an exhaustive search is needed. In this paper, MIMO-NOMA is defined broadly and refers to any technique that allows simultaneous transmission A simple example with how hybrid beamforming is employed at the transmit end of a massive MIMO communications system. For example, on the one hand, in order to utilize spatial diversity, ZF-based design is not. To exploit the spatial degrees of freedom, some MIMO NOMA schemes have been proposed in the literature [23,24]. in massive MIMO-NOMA networks, and none of them have considered SIC error propagation. The assertions are further testified through the Ergodic Sum Rate (ESR) performance using Monte-Carlo simulations. An efficient methodology also for Secure Beamforming designed for MIMO-NOMA Based on CRN scheme; The new technique for Maximizing Dynamic Access Energy Efficiency in Multiuser CRNs also With Primary User Return system; An innovative performance for Secure Beamforming designed also for Untrusted MISO CRNs Apr 5, 2022 · In non-orthogonal multiple access (NOMA) scheme, the strong users, located near to base station, demodulate their data by considering the information of other users as interference. the case of OMA can be released to user 2 in NOMA. Simulation results demonstrate that the models can achieve low BER in both perfect and imperfect SIC scenarios. The base station is equipped with M antennas and each user is equipped with N antennas. , decoded first). Total power is set 30 dBm in simulation, and users are set as 12 for MIMO NOMA cluster (2 users per cluster) and 6 for current NOMA. let's see how NOMA works in a simple MIMO Apr 15, 2024 · 2. 2)In the formulated optimization problem, the sample selection is discrete and power allocation is continuous, which can not be solve by traditional DRL method. Aug 20, 2020 · MIMO-NOMA enhanced physical layer security networks [11] of MIMO-NOMA networks. S YSTEM M ODEL In this section, we describe the mathematical model of a MIMO-NOMA-based multi-user VLC system. It's similar to supercharging your Wi-Fi. Take the MIMO-NOMA schemes proposed in [11] and [13] as examples. An alternate approach is to exploit cooperative communication with more A. Specifically, in [2], a power allocation scheme was developed for the MIMO-NOMA system with a Jan 1, 2022 · By combining Multiple-Input Multiple-Output (MIMO) techniques with Non-Orthogonal Multiple Access (NOMA) exploiting Successive Interference Cancellation (SIC) or Parallel Interference Cancellation Jan 5, 2024 · Reference applies two deep learning models to the MIMO-NOMA visible light communication (MIMO-NOMA-VLC) scenario. Each device determines whether to sample data Mar 16, 2024 · This, however, results in more complicated MIMO-NOMA design problems. It causes to increase in signalling overhead. The combination of NOMA and multi-antenna MIMO technologies exhibits significant potential in improving spectral efficiency and providing better wireless services to more users. However, we need more wireless communication resources. Dec 1, 2021 · Integrating massive multiple input multiple output (MIMO) architecture and non-orthogonal multiple access (NOMA) technology is deemed as a promising solution to the gridlock of ever increasing demand in data rate via extending communication frequency to millimeter wave (mmWave) band and improving system spectrum efficiency. A power allocation (PA) strategy is proposed, which ensures that MIMO-NOMA achieves a higher individual rate for each user than MIMO-OMA with arbitrary PA and optimal degrees of freedom split. C. MIMO-NOMA is a challenging problem due to the non-orthogonal interference between the users [20]–[22],especially when the number of users is large. And we focus on the power saving design when the HMIMOS has a massive number of elements. Assuming the downlink mode, and taking into consideration the impact of imperfect successive interference c Jul 15, 2023 · A novel technique of multiple interference cancellation (MIC) is proposed in to optimize energy and reduce complexity in device-to-device (D2D)-NOMA systems. The process of channel estimation and signal detection can be considered MIMO-NOMA and MIMO-OMA when users are paired into clusters. You can use the techniques of this example to construct a model from any type of dynamic system the signal processing are other advantages of the MIMO systems. In general, the MIMO systems are divided to two categories, which include the point-to-point or single-user MIMO systems (SU-MIMO), and the multiple-user MIMO systems (MU-MIMO). , high buildings and forests) cover large areas and block the LoS paths. There is both experimental and theoretical evidence that the widespread support for Massive MIMO in 5G is a paradigm shift when it comes to spectral efficiency, but nevertheless, it is not what most papers refer to when using the NOMA Dec 1, 2021 · Visible Light Communication (VLC) has evolved as a breakthrough technology for beyond 5G networks by providing a wide license-free spectrum. This resource includes system details and sample MATLAB code to help you get started: NOMA is gaining ground on the competition of multiple access techniques for the next generation wireless networks Adopted by many 5G MA concepts, including power-domain (PD) NOMA, sparse code multiple access (SCMA), multi-user sharing access (MUSA), pattern division multiple access (PDMA), lattice partition multiple access (LPMA), etc. rkj uqdg nofv iufx rzhap bry swdbs aghrl fdk gees