18th international conference on telecommunications , 2011-05-08

Title : ( Code Cross-Correlation Effects on the Performance of Optical CDMA Systems in the Presence of Receiver Noises )

Authors: Mohammad Molavi Kakhki , Seyed Mohammad Zabihi Maddah ,

Citation: BibTeX | EndNote

Abstract

Abstract — Increasing the number of simultaneous users is one of the challenging issues in incoherent and asynchronous optical CDMA systems. One solution is to increase the value of cross- correlation, λc. In [3] neglecting the effect of noise, optimum value of λc was obtained. In this work, with considering noise, the simultaneous effect of λc and transmitted power on the probability of bit error (pbe) is investigated. Our investigation is performed by employing OOC (λc =1) and prime code (λc =2) and active correlator is chosen for its robustness against the noise. The performance is analyzed for three common receiver structures, namely soft receiver (without optical hard limiter), single optical hard limiter (SHL) and double optical hard limiters (DHL). Our results show that under the same bandwidth efficiency, increasing λc in high power regimes decreases the pbe but increasing λc in low power regimes will increase pbe.

Keywords

, optical cdma, optical codes , correlation between optical codes
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@inproceedings{paperid:1028764,
author = {Molavi Kakhki, Mohammad and Zabihi Maddah, Seyed Mohammad},
title = {Code Cross-Correlation Effects on the Performance of Optical CDMA Systems in the Presence of Receiver Noises},
booktitle = {18th international conference on telecommunications},
year = {2011},
location = {ayia napa},
keywords = {optical cdma; optical codes ; correlation between optical codes},
}

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%0 Conference Proceedings
%T Code Cross-Correlation Effects on the Performance of Optical CDMA Systems in the Presence of Receiver Noises
%A Molavi Kakhki, Mohammad
%A Zabihi Maddah, Seyed Mohammad
%J 18th international conference on telecommunications
%D 2011

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