Record Details

Minimum conditional probability of error detection for MC-CDMA

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Minimum conditional probability of error detection for MC-CDMA
 
Creator DAYAL, PM
DESAI, UB
MAHANTA, ANIL
 
Subject code division multiple access
computational complexity
error statistics
least mean squares methods
minimisation
multiuser detection
 
Description Multi-carrier code division multiple access (MC-CDMA) is an attractive choice for high speed wireless communication as it mitigates the problem of intersymbol interference (ISI) and also exploits frequency diversity. The data stream in MC-CDMA is spread using a user specific spreading sequence in the frequency domain and every chip travels on a different sub-carrier. At the receiver, the different sub-carriers have to be combined properly to form the decision variable. Minimum mean square error (MMSE) detection is a popular choice for this, but as it tries to minimize the mean square error (MSE) and not the bit error rate (BER), the BER it attains is not optimum. We propose a minimum probability of error (MPOE) based linear multiuser detector, which tries to minimize the probability of error. A minimum conditional probability of error (MCPOE) detector is introduced for reducing the computational complexity of the MPOE detector. Theoretical and simulation results are presented for the MCPOE and MPOE detector and it can be seen that the MPOE detector outperforms the MMSE detector.
 
Publisher IEEE
 
Date 2008-12-12T04:45:23Z
2011-11-28T09:10:37Z
2011-12-15T09:58:09Z
2008-12-12T04:45:23Z
2011-11-28T09:10:37Z
2011-12-15T09:58:09Z
2004
 
Type Article
 
Identifier Proceedings of the IEEE Eighth International Symposium on Spread Spectrum Techniques and Applications, Sydney, Australia, 30 August-2 September 2004, 51-55
0-7803-8408-3
http://hdl.handle.net/10054/303
http://dspace.library.iitb.ac.in/xmlui/handle/10054/303
 
Language en