IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516

This article has now been updated. Please use the final version.

Performance Analysis of Block MSN Algorithm with Pseudo-noise Control in Multi-user MIMO System
Nobuyoshi KIKUMAKousuke YONEZUKunio SAKAKIBARA
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JOURNAL RESTRICTED ACCESS Advance online publication

Article ID: 2018ISP0004

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Abstract

MU-MIMO (Multi-User Multiple Input andMultiple Output) has been considered as a fundamental technology for simultaneous communications between a base station and multiple users. This is because it can generate a large virtual MIMO channel between a base station and multiple user terminals with effective utilization of wireless resources. As a method of implementing MU-MIMO downlink, Block Diagonalization (BD) was proposed in which the transmission weights are determined to cancel interference between multiple user terminals. On the other hand, BlockMaximum Signal-to-Noise ratio (BMSN) was proposed which determines the transmission weights to enhance the gain for each user terminal in addition to the interference cancellation. As a feature, BMSN has a pseudonoise for controlling the null depth to the interference. In this paper, to enhance further the BMSN performance, we propose the BMSN algorithm that has the pseudo-noise determined according to receiver SNR. As a result of computer simulation, it is confirmed that the proposed BMSN algorithm shows the significantly improved performance in evaluation of bit error rate (BER) and achievable bit rate (ABR).

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© 2018 The Institute of Electronics, Information and Communication Engineers
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