Iterative QR Detection for BLAST

Authors:
M. O. Damen;K. Abed-Meraim;S. Burykh
Affiliations:
ENST de Paris, 46, rue Barrault-75634, Paris, Cedex 13, France;ENST de Paris, 46, rue Barrault-75634, Paris, Cedex 13, France;ENST de Paris, 46, rue Barrault-75634, Paris, Cedex 13, France
Venue:
Wireless Personal Communications: An International Journal
Year:
2001

Citing 4
Cited 1

On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas

Wireless Personal Communications: An International Journal
Iterative decoding of binary block and convolutional codes

IEEE Transactions on Information Theory
Space-time codes for high data rate wireless communication: performance criterion and code construction

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Channel equalization for block transmission systems

IEEE Journal on Selected Areas in Communications

A VLSI Architecture of the Square Root Algorithm for V-BLAST Detection

Journal of VLSI Signal Processing Systems

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Abstract

We study an iterative detection algorithm of an uncoded multi-transmittermulti-receiver system. The main data stream is demultiplexed into Msubstreams, and each substream is modulated independently then transmitted byits dedicated antenna. The receiver disposes of N ≥ M antennas. Over eachreceive antenna the signal is a superposition of the M substreams affected byindependent fades and disturbed by AWGN. The detection algorithm is based onthe QR decomposition of the channel transfer matrix which is then used toperform hard or soft inter-substream interference cancellation. Comparisonsare done with the V-BLAST optimal order (OPT) detection algorithm. Theproposed algorithm is 4 to 8 times less complex than that of the V-BLAST OPT,while maintaining comparable performance.