An iterative frequency-domain decision feedback receiver for CDMA systems

Silva, Paulo; Dinis, Rui

http://hdl.handle.net/10400.1/2514

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Authors

Silva, Paulo

Dinis, Rui

Abstract(s)

Unless high-complexity receiver structures are employed, conventional DS-CDMA (direct sequence code division multiple access) schemes can have a poor performance in severe time-dispersive channels, since the orthogonality between the users is lost. In this paper, we propose an iterative frequency-domain decision feedback equalizer for the downlink transmission within DS-CDMA systems employing block-transmission techniques, with an appropriate cyclic extension appended to each block. Our performance results show that the proposed receiver structure has excellent performance, close to the single-user MFB (matched filter bound), even for severe time-dispersive scenarios and/or in the presence of strong interfering channels.

Keywords

Aerospace Communication Bioengineering Components Networking and broadcasting

URI

http://hdl.handle.net/10400.1/2514

Publisher

IEEE

DOI

http://dx.doi.org/10.1109/ISWCS.2004.1407198

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