Iterative Receivers for Space-Frequency Block-Coded OFDM Systems with Error Propagation Suppression

Konferenz: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
11.09.2005 - 14.09.2005 in Berlin, Germany

Tagungsband: PIMRC 2005

Seiten: 4Sprache: EnglischTyp: PDF

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Jing, Ya; Xu, Xiaodong; Chen, Ming; Cheng, Shixin (National Mobile Communications Research Laboratory, Southeast University Nanjing, PR China)
Wang, Haifeng (Nokia Mobile Phones Elektroniikkatie 3, PL 50, 90571 Oulu, Finland)

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.