A novel soft-in soft-out detection algorithm for space-time coded OFDM over multipath fading channels

被引:0
作者
Gallo, AS [1 ]
Vitetta, GM [1 ]
机构
[1] Univ Modena, Dept Informat Engn, I-41100 Modena, Italy
来源
GLOBECOM '04: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-6 | 2004年
关键词
expectation-maximization; space-time coding; low-density parity-check coding; OFDM; iterative receivers;
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper a novel soft-in soft-out detector for space-time block coded OFDM systems operating over multipath fading channels is derived using the Bayesian Expectation-Maximization (BEM) technique. It exploits statistical information about the communication channel and can be easily incorporated in iterative receivers when outer coding is adopted at the transmitter. Numerical results evidence the efficacy of the proposed algorithm, even in the presence of significant channel variations.
引用
收藏
页码:351 / 355
页数:5
相关论文
共 20 条
[1]   A simple transmit diversity technique for wireless communications [J].
Alamouti, SM .
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 1998, 16 (08) :1451-1458
[2]   OPTIMAL DECODING OF LINEAR CODES FOR MINIMIZING SYMBOL ERROR RATE [J].
BAHL, LR ;
COCKE, J ;
JELINEK, F ;
RAVIV, J .
IEEE TRANSACTIONS ON INFORMATION THEORY, 1974, 20 (02) :284-287
[3]  
Bello P., 1963, IEEE Transactions on Communications Systems, V11, P360
[4]  
BENLU X, 2002, IEEE T WIREL COMMUN, V1, P213
[5]   Bit-interleaved coded modulation [J].
Caire, G ;
Taricco, G ;
Biglieri, E .
IEEE TRANSACTIONS ON INFORMATION THEORY, 1998, 44 (03) :927-946
[6]   MAP symbol estimation on frequency-flat Rayleigh fading channels via a Bayesian EM algorithm [J].
Chiavaccini, E ;
Vitetta, GM .
IEEE TRANSACTIONS ON COMMUNICATIONS, 2001, 49 (11) :1869-1872
[7]   GQR models for multipath Rayleigh fading channels [J].
Chiavaccini, E ;
Vitetta, GM .
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2001, 19 (06) :1009-1018
[8]  
ERCEG V, 2001, 802163 IEEE
[9]  
ERCEG V, 802163C0129R4 IEEE
[10]  
*ETSI, 2002, BROADBR RAD ACC NETW