Anti-jamming performance of adaptive chaos based CDMA system in flat fading environment with imperfect channel estimation

Volume 6 Issue 3 May - July 2017

Research Paper

Anti-jamming performance of adaptive chaos based CDMA system in flat fading environment with imperfect channel estimation

Meher Krishna Patel*, Stevan M. Berber**, Kevin W. Sowerby***

* Research Scholar, Department of Electrical and Computer Engineering, University of Auckland, New Zealand.

** Department of Electrical and Computer Engineering at The University of Auckland, New Zealand.

*** Region 10 Representative, IEEE Admission and Advancement Committee.

Patel, M. K., Berber, S. M., Sowerby, K. W. (2017). Anti-Jamming Performance of Adaptive Chaos Based CDMA System in Flat Fading Environment With Imperfect Channel Estimation i-manager’s Journal on Communication Engineering and Systems, 6(3), 9-14. https://doi.org/10.26634/jcs.6.3.13612

Abstract

This paper presents the theoretical anti-jamming performance of adaptive multiuser DS-CDMA system with imperfect channel estimation in flat fading channel environment. Pilot symbols are used to estimate the fading coefficients using Least Mean Square (LMS) algorithm. Further, pilot data are added to users' data. Slow switching pulse noise jammer is considered in the work and the effect of imperfect channel estimation on Bit Error Rate (BER) is studied. It has been shown analytically that channel estimator reduces the phase distortion produced by channel, whereas amplitude distortion remains unaffected. Under the perfect synchronization assumption, probability of error in closed form is derived.