Title :
An Optimal PIC Group Decoding for Layered Alamouti Code in Two-User Case
Author :
Li, Guoquan ; Xia, Xiang-Gen ; Wu, Yucheng
Author_Institution :
Coll. of Commun. Eng., Chongqing Univ., Chongqing, China
Abstract :
Partial interference cancellation (PIC) group decoding is an attractive method to reduce the maximum-likelihood (ML) decoding complexity of a layered Alamouti code. However, different grouping schemes for the PIC group decoding may have different performances. In this paper, 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. 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 :
MIMO communication; group codes; interference suppression; maximum likelihood decoding; layered Alamouti code; maximum-likelihood decoding complexity; optimal PIC group decoding; partial interference cancellation; two-user case; Complexity theory; Decoding; Educational institutions; Interference cancellation; Receivers; Signal to noise ratio; Vectors;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE
Conference_Location :
Houston, TX, USA
Print_ISBN :
978-1-4244-9266-4
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2011.6134102
