Message Passing-Based mmWave MIMO-NOMA With User Grouping and Power Allocation | IEEE Journals & Magazine | IEEE Xplore

Message Passing-Based mmWave MIMO-NOMA With User Grouping and Power Allocation


Abstract:

In this paper, we investigate a downlink non-orthogonal multiple access (NOMA) transmission scheme for hybrid millimeter-wave (mmWave) system and study its user grouping ...Show More

Abstract:

In this paper, we investigate a downlink non-orthogonal multiple access (NOMA) transmission scheme for hybrid millimeter-wave (mmWave) system and study its user grouping and power allocation. In order to maximize the weighted sum-rate (WSR) of the system, we first propose a user grouping algorithm based on min-sum message passing (MSMP) strategy under the limited number of radio frequency (RF) chains. Then, with the zero-forcing (ZF) digital precoding, we propose a power allocation scheme for multiple-RF-chain NOMA (MRFC-NOMA) structure based on a non-convex transformation method, and design a low-complexity algorithm. The simulation results show that the proposed joint user grouping and power allocation method with lower complexity can achieve better WSR performance than the traditional schemes.
Published in: IEEE Transactions on Vehicular Technology ( Volume: 71, Issue: 11, November 2022)
Page(s): 12356 - 12361
Date of Publication: 21 July 2022

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