Precoder Design in Statistical CSI Aided Non-Orthogonal Multiple Access

Sun, Yanjing; Zhou, Jiasi; Cao, Qi; Li, Song

doi:10.1109/access.2018.2797882

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…For instance, the authors in [3] formulate an ergodic capacity maximization problem under SCSI to design the power allocation for a Rayleigh fading 2-user MIMO-NOMA system. In [13], an optimal statistical precoder for a MIMO-NOMA system is designed to maximize the ergodic capacity. In [14], a joint rate and domain information (ADI), i.e., the user's spatial angle 1 that are collected at the BS, to provide: 1) user clustering, 2) user ordering, 3) power allocation, 4) fully digital beamforming performing simultaneous addressing of users, named angledomain digital beamforming (AD-DBF).…”

Section: A Motivation and Related Workmentioning

confidence: 99%

Multi-User Angle-Domain MIMO-NOMA System for mmWave Communications

Khaled

Langlais²,

Falou

et al. 2021

IEEE Access

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Thanks to the high directionality of millimeter-wave (mmWave) channels, angle-domain beamforming is an appealing technique for multi-user multiple-input multiple-output (MU-MIMO) in terms of sum-throughput performance and limited feedback. By utilizing only the angular information of users at the transmitter, we propose an angle-domain non-orthogonal multiple access (NOMA) scheme to enhance the sum-throughput of the mmWave MU-MIMO system, especially in congested cells. We first derive a set of angular-based performance metrics, such as the inter-user spatial interference, the user channel quality, and the sum-throughput, by exploiting the specific features of the mmWave propagation. Then, a multi-user clustering algorithm is developed based on the spatial interference metric, and a new user ordering strategy is proposed using the angular-based channel quality metric. Additionally, we design a power allocation method that maximizes the angular-based sum-throughput. Extensive numerical results show that the proposed scheme significantly improves the performance of the mmWave MU-MIMO system by achieving up to 39% increase in the spectral efficiency when the number of users is closed to the number of antennas. Moreover, we find that the proposed user ordering strategy outperforms other limited feedback strategies, and the angular-based power allocation allows for efficient successive interference cancellation.INDEX TERMS Millimeter-wave networks, multiple-input multiple-output, beamforming, non-orthogonal multiple access.

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Section: A Motivation and Related Workmentioning

confidence: 99%

Multi-User Angle-Domain MIMO-NOMA System for mmWave Communications

Khaled

Langlais²,

Falou

et al. 2021

IEEE Access

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“…The sum-rate performance of the proposed scheme outperforms GCOMP-OMA scheme is to maximize one of the overall sum-rate [117], [123], [134], weighted sum-rate [133], [135], or, the worst userrate [119], [132]. On the other hand, if only statistical CSIT is available, then the design objective is to maximize the ergodic sum-rate [116], [129] rather than the actual sum-rate. While obtaining full CSIT helps maximize the system throughput, it comes with additional cost and overhead, especially in frequency division duplex (FDD) systems where reciprocity cannot be used.…”

Section: Kkt Optimality Conditionsmentioning

confidence: 99%

A Survey of Rate-Optimal Power Domain NOMA With Enabling Technologies of Future Wireless Networks

Maraqa

Rajasekaran

Al-Ahmadi

et al. 2020

IEEE Commun. Surv. Tutorials

349

159

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Non-orthogonal multiple access (NOMA) schemes serve more than one user in the same resource block by multiplexing users in other domains than frequency and time. In this way, NOMA schemes offer several advantages over orthogonal multiple access (OMA) schemes such as improved user fairness and spectral efficiency, higher cell-edge throughput, massive connectivity support, and low transmission latency. With these merits, NOMA transmission schemes are being increasingly looked at as a promising multiple access scheme for future wireless networks. When the power domain is used to multiplex users, it is referred to as the power domain NOMA (PD-NOMA) scheme. In this paper, we survey the integration of the PD-NOMA scheme with other upcoming communication schemes and technologies that satisfy the requirements of 5G and beyond 5G (B5G) networks. In particular, this paper surveys the rate optimization schemes studied in the literature when the PD-NOMA scheme is combined with MIMO and massive MIMO (mMIMO), millimeter wave (mmWave) communications, coordinated multi-point (CoMP) transmission and reception, cooperative communications, cognitive radio (CR), visible light communications (VLC), and unmanned aerial vehicle (UAV) assisted communications. The considered system models, the optimization methods used to maximize the achievable rates, and the main outcomes on the performance of these NOMA-enabled schemes are discussed along with future research directions for these combined schemes.

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“…We define the outage probability as the probability that the achieved data rate of an individual user is below a predefined value. According to the Shannon capacity and the SINR expressions in (7) and (9), the data rate of the near user and the far user in cluster 1 can be expressed as…”

Section: Outage Probability Analysismentioning

confidence: 99%

“…[6] examined iterative user clustering, and joint optimization with beamforming design and power allocation for MISO-NOMA downlink systems. The authors in [7] investigated the ergodic rate maximization problem for MISO-NOMA system considering statistical CSI under a constraint on the total transmission power. On the other hand, the authors in [8] proposed a minimum total power problem in MISO-NOMA system.…”

Section: Introductionmentioning

confidence: 99%

Outage Probability Analysis for Two-Antennas MISO-NOMA Downlink with Statistical CSI

Derakhshani

Chen

et al. 2019

2019 IEEE Global Communications Conference (GLOBECOM)

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In this paper, we analyze the outage probability of the multiuser multiple-input single-output (MISO) downlink system by combining the non-orthogonal multiple access (NOMA) scheme. We derive tractable closed-form outage expressions given a minimum target rate for the individual users for the case of two antennas, by modeling cumulative distribution function (CDF) of received signal-to interference plus noise ratio (SINR). Simulation results illustrate the outage performance for different power allocation scenarios and verify the accuracy of our outage probability analysis.

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Precoder Design in Statistical CSI Aided Non-Orthogonal Multiple Access

Cited by 8 publications

References 15 publications

Multi-User Angle-Domain MIMO-NOMA System for mmWave Communications

Multi-User Angle-Domain MIMO-NOMA System for mmWave Communications

A Survey of Rate-Optimal Power Domain NOMA With Enabling Technologies of Future Wireless Networks

Outage Probability Analysis for Two-Antennas MISO-NOMA Downlink with Statistical CSI

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