A simple method of transmitting stream adaptation for fixed-matrix-size precoding on MU-MIMO transmission

Yafei Hou, Satoshi Sonobe, Kazuto Yano, Masahiro Uno, Kiyoshi Kobayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

During the operation of multiuser multiple-input-multiple output (MU-MIMO) algorithms, some antennas of BS or UEs may neither transmit nor receive signals due to the long distance or unexpected damages. Therefore, the BS cannot obtain the channel state information (CSI) from/to these antennas. Without these CSI, the performance of algorithm is degraded. We call this effect as 'broken antenna effect (BAE)'. To cope with this issue, this paper proposes a process to regularize the channel matrix by replacing the missing CSI with zero(s) and setting nonzero values to diagonal elements. Then, it is confirmed through computer simulation that the proposed method can adjust the number of transmitting parallel streams according to the number of 'broken' antennas, and provide MU-MIMO transmission with maximum diversity order without any change of the precoding process.

Original languageEnglish
Title of host publication2012 IEEE Wireless Communications and Networking Conference, WCNC 2012
Pages136-141
Number of pages6
DOIs
Publication statusPublished - Aug 1 2012
Externally publishedYes
Event2012 IEEE Wireless Communications and Networking Conference, WCNC 2012 - Paris, France
Duration: Apr 1 2012Apr 4 2012

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Other

Other2012 IEEE Wireless Communications and Networking Conference, WCNC 2012
CountryFrance
CityParis
Period4/1/124/4/12

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Hou, Y., Sonobe, S., Yano, K., Uno, M., & Kobayashi, K. (2012). A simple method of transmitting stream adaptation for fixed-matrix-size precoding on MU-MIMO transmission. In 2012 IEEE Wireless Communications and Networking Conference, WCNC 2012 (pp. 136-141). [6213993] (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2012.6213993