Paper Info
Title
Combined MMSE interference suppression and turbo coding for a coherent DS-CDMA system
Abstract
The performance of a turbo-coded code division multiaccess system with a minimum mean-square error (MMSE) receiver for interference suppression is analyzed on a Rayleigh fading channel. In order to accurately estimate the performance of the turbo coding, two improvements are proposed on the conventional union bounds: the information of the minimum distance of a particular turbo interleaver is used to modify the average weight spectra, and the tangential bound is extended to the Rayleigh fading channel. Theoretical results are derived based on the optimum tap weights of the MMSE receiver and maximum-likelihood decoding. Simulation results incorporating iterative decoding, RLS adaptation, and the effects of finite interleaving are also presented. The results show that in the majority of the scenarios that we are concerned with, the MMSE receiver with a rate-1/2 turbo code will outperform a rate-1/4 turbo code. They also show that, for a bit error rate lower than 10-3, the capacity of the system is increased by using turbo codes over convolutional codes, even with small block sizes
Year
DOI
Venue
2001
10.1109/49.947043
IEEE Journal on Selected Areas in Communications
Keywords
Field
DocType
Interference suppression,Turbo codes,Fading,Iterative decoding,Multiaccess communication,Performance analysis,Maximum likelihood estimation,Maximum likelihood decoding,Resonance light scattering,Interleaved codes
Turbo,Concatenated error correction code,Convolutional code,Computer science,Turbo code,Serial concatenated convolutional codes,Algorithm,Real-time computing,Theoretical computer science,Turbo equalizer,Decoding methods,Bit error rate
Journal
Volume
Issue
ISSN
19
9
0733-8716
Citations 
PageRank 
References 
3
0.48
15
Authors
3
Name
Order
Citations
PageRank
K. Tang130.48
L. B. Milstein21670254.06
P. H. Siegel367167.14