Title :
An iterative interference cancellation scheme for STBC multirate multiuser systems
Author :
Pham, The-Hanh ; Nallanathan, A. ; Kannan, B.
Author_Institution :
Nat. Univ. of Singapore, Singapore
Abstract :
In this paper, an iterative interference cancellation (IIC) scheme is proposed for space-time block coded (STBC) multirate multiuser systems. The proposed IIC scheme is based on minimum mean square estimation (MMSE) interference cancellation and maximum likelihood detection. In the proposed scheme, the high rate user data is decoded first and the decoded high rate user data is used to decode the low rate user data. Subsequently, low rate user data is used to re-decode the high rate user data. The bit error rate performance of the proposed IIC is better than the conventional non-iterative MMSE scheme. In addition, the proposed scheme performs well not only in multirate multiuser systems but also in equal rate multiuser systems. As expected, the performance margin diminishes with number of iterations.
Keywords :
4G mobile communication; MIMO systems; block codes; diversity reception; error statistics; interference suppression; iterative decoding; least mean squares methods; maximum likelihood decoding; maximum likelihood detection; multiuser detection; space-time codes; MIMO systems; MMSE; STBC; bit error rate performance; equal rate multiuser systems; high rate user data decoding; iterative interference cancellation; low rate user data; maximum likelihood detection; minimum mean square estimation; multirate multiuser systems; space-time block coding; Bit error rate; Block codes; Interference cancellation; Interference suppression; Iterative decoding; Maximum likelihood decoding; Maximum likelihood detection; Receiving antennas; Transmitting antennas; Wireless communication;
Conference_Titel :
Wireless Communications and Networking Conference, 2005 IEEE
Print_ISBN :
0-7803-8966-2
DOI :
10.1109/WCNC.2005.1424555
