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An Efficient Searching Algorithm for Receive Minimum Distance in MIMO Systems with ML Receiver
Myeongcheol SHIN Jiwon KANG Byungwook YOO Chungyong LEE
IEICE TRANSACTIONS on Communications
Publication Date: 2009/01/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
receive minimum distance, shortest vector, maximum likelihood detection, sphere decoding,
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A modified Schnorr-Euchner sphere decoding (SE-SD) algorithm to search for the receive minimum distance is presented. In the proposed algorithm, the visit to negative symmetric vectors of already spanned vectors is avoided by using a biased spanning, and the redundant processes to visit the all-zero vector are also eliminated. A numerical experiment shows that the modified SE-SD algorithm is much more efficient than the conventional algorithm in terms of average computational complexity.