DocumentCode :
1333980
Title :
An Optimal Zero-Forcing PIC Group Decoding for Two-User Layered Alamouti Code
Author :
Li, Guoquan ; Xia, Xiang-Gen ; Wu, Yucheng
Author_Institution :
Coll. of Commun. Eng., Chongqing Univ., Chongqing, China
Volume :
59
Issue :
12
fYear :
2011
fDate :
12/1/2011 12:00:00 AM
Firstpage :
3290
Lastpage :
3293
Abstract :
The decoding complexity of the layered Alamouti code with the maximum-likelihood (ML) receiver is high. Partial interference cancellation (PIC) group decoding is an attractive method to reduce the ML decoding complexity. However, different grouping schemes for the PIC group decoding may have different performances. In this letter, by fully taking advantage of the Alamouti code structure, we analytically calculate the power gains of the information symbols after the PIC for a grouping scheme, where the zero-forcing (ZF) operator is used for the PIC. We then propose an optimal grouping scheme for the PIC group decoding by proposing a criterion to choose the grouping schemes adaptively so that the power gains of the information symbols are maximized after the PIC.
Keywords :
interference suppression; maximum likelihood decoding; radio receivers; information symbols; maximum-likelihood ML decoding complexity; maximum-likelihood receiver; optimal grouping scheme; optimal zero-forcing PIC group decoding; partial interference cancellation; two-user layered Alamouti code; Block codes; Complexity theory; Decoding; Interference; Interference cancellation; MIMO; Maximum likelihood decoding; Receivers; Signal to noise ratio; Layered Alamouti code; group decoding; partial interference cancellation (PIC); two-user MIMO systems;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOMM.2011.091911.100256A
Filename :
6029346
Link To Document :
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