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MPOE based adaptive space-time multiuser detector for multipath CDMA channels

DSpace at IIT Bombay

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Title MPOE based adaptive space-time multiuser detector for multipath CDMA channels
 
Creator DUA, ADITYA
DESAI, UB
 
Subject adaptive signal detection
antenna arrays
code division multiple access
error statistics
multipath channels
multiuser channels
 
Description DS-CDMA is a popular multiple access technology for wireless communication. The performance of DS-CDMA is limited by multiple access interference and multipath distortion. Multiuser detection and space-time processing techniques are employed to improve the performance of DS-CDMA. An adaptive space-time multiuser detector based on the minimum probability of error (MPOE) criterion is proposed here for an asynchronous multipath DS-CDMA channel, with the receiver employing multiple antennas. The receiver structure is derived for gradient descent based adaptation. A blind version of the receiver is also proposed. It is seen that the MPOE receiver offers BER performance comparable to the optimal non-adaptive MMSE detector in steady state, however with much lower computational complexity and a faster convergence rate compared to other adaptive implementations of the MMSE detector (LMS, RLS).
 
Publisher IEEE
 
Date 2008-12-23T06:47:05Z
2011-11-28T05:27:24Z
2011-12-15T09:56:38Z
2008-12-23T06:47:05Z
2011-11-28T05:27:24Z
2011-12-15T09:56:38Z
2002
 
Type Article
 
Identifier Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (V 3), Orlando, USA, 13-17 May 2002, III-2593-III-2596
0-7803-7402-9
10.1109/ICASSP.2002.1005216
http://hdl.handle.net/10054/478
http://dspace.library.iitb.ac.in/xmlui/handle/10054/478
 
Language en