Performance analysis of multiuser massive MIMO with multi-antenna users: Asymptotic data rate and its application

Min, Kyungsik; Kim, Taehyoung; Jung, Minchae

doi:10.1016/j.icte.2023.01.003

Cited by 4 publications

(1 citation statement)

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“…In MIMO-NOMA systems, the transmitter employs interference cancelation techniques to form spatially orthogonal beams, with each beam carrying information for multiple users or groups of users [7]. The conventional linear precoding techniques such as Zero-forcing Beamforming (ZFBF) and Minimum Mean Square Error (MMSE) are commonly used to achieve spatial orthogonality [8,9]. In the conventional linear precoding, the interference is canceled at the transmitter, and the receiver treats it as background noise [10].…”

Section: Introductionmentioning

confidence: 99%

RS-Based MIMO-NOMA Systems in Multicast Framework

Majidi Ivari,

Reza Soleymani,

R. Shayan

2023

MIMO Communications - Fundamental Theory, Propagation Channels, and Antenna Systems

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This chapter presents a novel scheme that integrates the rate-splitting (RS) technique in Multiple Input Multiple Output (MIMO) systems with non-orthogonal multiple access (NOMA) to improve performance and capacity in wireless communication systems under imperfect channel state information at the transmitter (CSIT) and in overloaded regimes. The proposed approach addresses a general and realistic scenario, incorporating both unicast and multicast users, aiming to increase system throughput through the optimization of precoding vectors and power allocation. A generic power allocation optimization technique is introduced, which can be employed for maximizing both the minimum-rate and sum-rate, focusing on the rate of the weakest user within each group per cluster. To tackle the non-convex nature of the problems, the proposed technique leverages the WMMSE-rate relationship and an alternating optimization (AO) algorithm, transforming the problem into a convex one. The chapter provides a comprehensive analysis of the proposed scheme, offering a tutorial background and presenting novel insights for an enhanced understanding.

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