Adaptive Minimum-BER Linear Multiuser Detection for DS-CDMA Signals in Multipath Channels
Adaptive Minimum-BER Linear Multiuser Detection for DS-CDMA Signals in Multipath Channels
The problem of constructing adaptive minimum bit error rate (MBER) linear multiuser detectors is considered for direct-sequence code division multiple access (DS-CDMA) signals transmitted through multipath channels. Based on the approach of kernel density estimation for approximating the bit error rate (BER) from training data, a least mean squares (LMS) style stochastic gradient adaptive algorithm is developed for training linear multiuser detectors. Computer simulation is used to study the convergence speed and steady-state BER misadjustment of this adaptive MBER linear multiuser detector, and the results show that it outperforms an existing LMS-style adaptive MBER algorithm first presented at Globecom'98 by Yeh, Lopes and Barry.
1240-1247
Chen, S.
9310a111-f79a-48b8-98c7-383ca93cbb80
Samingan, A.K.
16b3f372-cc0c-473e-b345-6807442f9fb0
Mulgrew, B.
95a3fbda-7de2-4583-b1f2-0a54a69b414a
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
June 2001
Chen, S.
9310a111-f79a-48b8-98c7-383ca93cbb80
Samingan, A.K.
16b3f372-cc0c-473e-b345-6807442f9fb0
Mulgrew, B.
95a3fbda-7de2-4583-b1f2-0a54a69b414a
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Chen, S., Samingan, A.K., Mulgrew, B. and Hanzo, L.
(2001)
Adaptive Minimum-BER Linear Multiuser Detection for DS-CDMA Signals in Multipath Channels.
IEEE Transactions on Signal Processing, 49 (6), .
Abstract
The problem of constructing adaptive minimum bit error rate (MBER) linear multiuser detectors is considered for direct-sequence code division multiple access (DS-CDMA) signals transmitted through multipath channels. Based on the approach of kernel density estimation for approximating the bit error rate (BER) from training data, a least mean squares (LMS) style stochastic gradient adaptive algorithm is developed for training linear multiuser detectors. Computer simulation is used to study the convergence speed and steady-state BER misadjustment of this adaptive MBER linear multiuser detector, and the results show that it outperforms an existing LMS-style adaptive MBER algorithm first presented at Globecom'98 by Yeh, Lopes and Barry.
More information
Published date: June 2001
Additional Information:
submitted in April 2000, revised in Oct.2000, and accepted in Feb.2001
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 252953
URI: http://eprints.soton.ac.uk/id/eprint/252953
ISSN: 1053-587X
PURE UUID: 5c42f4e8-298e-481b-bf7a-8ed13ab35d35
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Date deposited: 04 Mar 2004
Last modified: 18 Mar 2024 02:33
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Contributors
Author:
S. Chen
Author:
A.K. Samingan
Author:
B. Mulgrew
Author:
L. Hanzo
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