A low complexity MMSE detector for multiuser layered space-time coded MIMO systems

May Gomaa*, Ali Ghrayeb

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

Merging layered space-time (LST) coding, which provides high data rate transmission, with space-time block coding (STBC) provides a tradeoff between transmit diversity and bandwidth efficiency in multiple-input multiple-output (MIMO) systems. This architecture is known as multilayered space time coding (MLSTC). In this paper, we propose a reduced complexity MMSE detector based on the Sorted QR decomposition, intended for MLSTC systems. The proposed decoder has reduced computational complexity in comparison to the group interference cancellation scheme. Our proposed decoder allows for the number of receive antennas to be less than the number of transmit antennas. Since we are dealing with a multiuser system, we wish all users to benefit from the same performance. We therefore use power allocation techniques to amplify users to the highest level of performance available and thus improving the performance.

Original languageEnglish
Title of host publication2007 Canadian Conference on Electrical and Computer Engineering, CCECD
Pages617-620
Number of pages4
DOIs
Publication statusPublished - 2007
Externally publishedYes
Event2007 Canadian Conference on Electrical and Computer Engineering, CCECD - Vancouver, BC, Canada
Duration: 22 Apr 200726 Apr 2007

Publication series

NameCanadian Conference on Electrical and Computer Engineering
ISSN (Print)0840-7789

Conference

Conference2007 Canadian Conference on Electrical and Computer Engineering, CCECD
Country/TerritoryCanada
CityVancouver, BC
Period22/04/0726/04/07

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