Low Complexity ML Detection Technique for V-BLAST Systems with DFE Decoding

Myung-Sun BAEK  So-Young YEO  Young-Hwan YOU  Hyoung-Kyu SONG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E90-B   No.5   pp.1261-1265
Publication Date: 2007/05/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.5.1261
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
V-BLAST,  ML,  OSIC,  ZF/MMSE-DFE,  

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Summary: 
In this letter, a low complexity ML detection technique for V-BLAST systems is proposed. In this proposed scheme, V probable streams are detected according to the first detected sub-stream of DFE detector and most probable stream is selected by likelihood test, since the performance of V-BLAST system depends on the first sub-stream detection capability. It has been shown that the proposed technique can detect the transmitted data more accurately than conventional DFE decoding scheme, and has very lower complexity than ML detector.