期刊名称：International Journal on Computer Science and Engineering
印刷版ISSN：2229-5631
电子版ISSN：0975-3397
出版年度：2012
卷号：4
期号：01
页码：97-105
出版社：Engg Journals Publications
摘要：The conventional V-BLAST detection is a single flow algorithm that consists of the two major operations: 1) the finding of the ordering index and 2) the nulling and symbol cancellation process. This paper focuses on the second operation and provides an alternative way for the nulling and symbol cancellation process using the QR decomposition to modify the V-BLAST algorithm for another way of effective detection. The decomposition of the channel matrix into the orthonormal matrix Q and the triangular matrix R have created a way of achieving symbol cancellation by means of backward substitution. Results are presented for various system configurations that demonstrate the performance of rearranging the channel matrix using the proposed method as compared to random ordering.
关键词：MIMO; V-BLAST; Space-Time system; Symbol cancellation; MMSE.
