Title :
Iterative receivers for space-frequency block-coded OFDM systems with error propagation suppression
Author :
Jing, Ya ; Xu, Xiaodong ; Chen, Ming ; Cheng, Shixin ; Wang, Haifeng
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing
Abstract :
This paper considers the design of iterative receivers for space-frequency block-coded orthogonal frequency division multiplexing (SFBC-OFDM) systems in unknown wireless dispersive fading channel with outer channel coding. The iterative joint channel estimation and symbol detection algorithm is derived. A simple decision-error judgment criterion is proposed and an improved training scheme is applied in the system to suppress the error propagation. Both theoretical analysis and computer simulation show that this algorithm gives better BER performance and saves the overhead of OFDM systems
Keywords :
OFDM modulation; block codes; channel coding; channel estimation; dispersive channels; error statistics; fading channels; iterative methods; modulation coding; radio receivers; BER performance; SFBC; bit error rate; channel coding; channel estimation; error propagation suppression; iterative receiver; orthogonal frequency division multiplexing; space-frequency block-coded OFDM system; symbol detection algorithm; wireless dispersive fading channel; Algorithm design and analysis; Channel coding; Channel estimation; Computer errors; Computer simulation; Detection algorithms; Dispersion; Fading; OFDM; Performance analysis; SFBC-OFDM; channel estimation; error propagation; iterative receiver; symbol detection;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on
Conference_Location :
Berlin
Print_ISBN :
9.7838007291e+012
DOI :
10.1109/PIMRC.2005.1651895
