Performance Tradeoff in Multiuser Equalization for CDMA over Flat Channels

Authors:
Kok Ann Donny Teo;Shuichi Ohno
Affiliations:
-;-
Venue:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Year:
2008

Citing 8
Cited 0

Multiuser Detection

Multiuser Detection
Generalized multicarrier CDMA: unification and linear equalization

EURASIP Journal on Applied Signal Processing
Capon multiuser receiver for CDMA systems with space-time coding

IEEE Transactions on Signal Processing
Accurate bit-error rate evaluation for synchronous MC-CDMA over Nakagami-m-fading channels using moment generating functions

IEEE Transactions on Wireless Communications
Universal BER Performance Ordering of MIMO Systems over Flat Channels

IEEE Transactions on Wireless Communications
Maximizing the spectral efficiency of coded CDMA under successive decoding

IEEE Transactions on Information Theory
Spectral efficiency of multicarrier CDMA

IEEE Transactions on Information Theory
Channel equalization for block transmission systems

IEEE Journal on Selected Areas in Communications

Quantified Score

Hi-index	0.00

Visualization

Abstract

We study the bit-error rate (BER) for different code lengths and number of users in CDMA system with linear minimum mean squared error (MMSE) and non-linear equalizations. We first show that for a fix channel and a fix number of users, BER of each symbol after linear equalization degrades with a decrease in the code length. Then, we prove that for a fix code length, the BER averaged over random channels improves with a decrease in the number of users. Furthermore, in the non-linear serial-interference cancellation (SIC) scheme, we prove analytically that the BER improves with each step of symbol cancellation for any channel not just at high signal-to-interference noise ratio (SINR) but at all range of SINR. Simulation results are presented to substantiate our theoretical findings.