大规模MIMO系统中的伪随机码导频设计

doi:10.3969/j.issn.0255-8297.2016.01.001

Abstract

Abstract: To deal with pilot contamination in massive MIMO systems, an efficient pilot design scheme is proposed. Different pseudo-random codes are assigned to different cells, all using the same set of orthogonal pilots. These codes are used to scramble the user pilot in each cell to get a transmission pilot. Mean square error (MSE) performance of expected channel estimation is derived and analyzed. Simulation results show that the channel estimation performance can be effectively improved when a proper pseudo-random code is chosen with the proposed pilot design method. It can greatly enhance the downlink performance in all cells.

Key words: massive MIMO, pilot contamination, channel estimation, pseudo-random code

CLC Number:

TN929.533

FANG Xin, ZHANG Jian-feng, CAO Hai-yan, YING Na. Pilot Design Based on Pseudo-random Code in Massive MIMO System[J]. Journal of Applied Sciences, 2016, 34(1): 1-11.

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Pilot Design Based on Pseudo-random Code in Massive MIMO System

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