LOS-Based Equal Gain Transmission and Combining in General Frequency-Selective Ricean Massive MIMO Channels

Electronics

Qiuna Yan¹  Yu Sun¹  Dian-Wu Yue¹ 

[1] School of Information Science and Technology, Dalian Maritime University, Dalian 116026, China;

关键词: massive MIMO;    beamforming;    line-of-sight;    Ricean fading;    frequency-selective;    power scaling;   

DOI  :  10.3390/electronics8010079

来源: DOAJ

【 摘 要 】

In general frequency-selective Ricean fading environments with doubly-ended spatial correlation, this paper investigates the spectral efficiency of a broadband massive multiple-input multiple-output (MIMO) system. In particular, in order to reduce overhead of channel estimation effectively, it proposes a scheme of equal gain transmission and combining, which is only based on line- of-sight (LOS) component and has low hardware complexity. With the scheme, several interesting transmit power scaling properties without and with spatial correlation are derived when the number of antennas at the transmitter or the number of antennas at the receiver grows in an unlimited way. Furthermore, the asymptotical rate analysis is extended to the cooperative relaying scenarios with decode-and-forward and amplify-and-forward protocols, respectively, and then two novel power scaling laws are given.

【 授权许可】

Unknown