4.5 Article

A Sparse Optimization Approach for Beyond 5G mmWave Massive MIMO Networks

期刊

CMC-COMPUTERS MATERIALS & CONTINUA
卷 72, 期 2, 页码 2797-2810

出版社

TECH SCIENCE PRESS
DOI: 10.32604/cmc.2022.026185

关键词

5G; mmwave precoding; massive mimo; complexity

资金

  1. Ministry of Education, Malaysia [FRGS/1/2018/ICT02/UKM/02/6]

向作者/读者索取更多资源

This paper proposes an energy-efficient hybrid precoding algorithm based on RF chains selection for mmWave massive MIMO networks to reduce energy consumption and cost, and provide desirable quality-of-service. Simulation results show that the algorithm can effectively improve system performance under different operating conditions.
Millimeter-Wave (mmWave) Massive MIMO is one of the most effective technology for the fifth-generation (5G) wireless networks. It improves both the spectral and energy efficiency by utilizing the 30-300 GHz millimeter-wave bandwidth and a large number of antennas at the base station. However, increasing the number of antennas requires a large number of radio frequency (RF) chains which results in high power consumption. In order to reduce the RF chain's energy, cost and provide desirable quality-of-service (QoS) to the subscribers, this paper proposes an energy-efficient hybrid precoding algorithm for mmWave massive MIMO networks based on the idea of RF chains selection. The sparse digital precoding problem is generated by utilizing the analog precoding codebook. Then, it is jointly solved through iterative fractional programming and successive convex optimization (SCA) techniques. Simulation results show that the proposed scheme outperforms the existing schemes and effectively improves the system performance under different operating conditions.

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