Technology of Network & Communication
|
263-266

Spectrum efficiency analysis of large-scale MU-MISO system in spatial correlation channel

Hu Yaowena
Zeng Guigenb
a. College of Telecommunications & Information Engineering, b. Institute of Signal Processing & Transmission, Nanjing University of Posts & Telecommunications, Nanjing 210003, China

Abstract

In the large-scale MU-MISO system, this paper studied the spectral efficiency affected by the channel and power allocation in spatially correlated channels. Firstly, it derived the transmit correlation matrix of the user from steering matrix which was determined by the wave path difference of the transmission signal. Then it established spatial correlation channel under the large-scale shadow fading and the scattering environment with Gaussian distribution. Based on the spatial correlation channel, it simulated the precoding which could reduce the interference between multiple users for the spectral efficiency performance. Finally, this paper proposed a power allocation algorithm that made the spectrum efficiency maximized in the scenario where the transmit power was limited and signal to interference plus noise ratio of each user was limited in receive signal. The simulation shows that the spectral efficiency of RZF precoding in spatially correlated channels is better than that of MRT precoding. And compared with the average power allocation, the spectral efficiency with the proposed algorithm which has strong theoretical and practical significance has the improvement.

Foundation Support

国家自然科学基金面上项目(61471202)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2018.07.0467
Publish at: Application Research of Computers Printed Article, Vol. 37, 2020 No. 1
Section: Technology of Network & Communication
Pages: 263-266
Serial Number: 1001-3695(2020)01-055-0263-04

Publish History

[2020-01-05] Printed Article

Cite This Article

胡耀文, 曾桂根. 空间相关信道下大规模MU-MISO系统频谱效率分析 [J]. 计算机应用研究, 2020, 37 (1): 263-266. (Hu Yaowen, Zeng Guigen. Spectrum efficiency analysis of large-scale MU-MISO system in spatial correlation channel [J]. Application Research of Computers, 2020, 37 (1): 263-266. )

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Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

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