Performance Analysis of SAC Optical PPM-CDMA System-Based Interference Rejection Technique

被引：7

作者：

Alsowaidi N. ^{[1
]}

Eltaif T. ^{[1
]}

Mokhtar M.R. ^{[2
]}

机构：

[1] Faculty of Engineering and Technology, Multimedia University, Bukit Beruang, Melaka

[2] Faculty of Engineering, Multimedia University, Cyberjaya, Selangor

来源：

Journal of Optical Communications | 2016年 / 37卷 / 01期

关键词：

interference cancellation; optical communication; pulse position modulation (PPM);

D O I：

10.1515/joc-2015-0012

中图分类号：

学科分类号：

摘要：

In this paper, we aim to theoretically analyse optical code division multiple access (OCDMA) system that based on successive interference cancellation (SIC) using pulse position modulation (PPM), considering the interference between the users, imperfection cancellation occurred during the cancellation process and receiver noises. Spectral amplitude coding (SAC) scheme is used to suppress the overlapping between the users and reduce the receiver noises effect. The theoretical analysis of the multiple access interference (MAI)-limited performance of this approach indicates the influence of the size of M-ary PPM on OCDMA system. The OCDMA system performance improves with increasing M-ary PPM. Therefore, it was found that the SIC/SAC-OCDMA system using PPM technique along with modified prime (MPR) codes used as signature sequence code offers significant improvement over the one without cancellation and it can support up to 103 users at the benchmarking value of bit error rate (BER) = 10-9 with prime number p = 11 while the system without cancellation scheme can support only up to 52 users. © 2016 by De Gruyter.

引用

页码：87 / 92

页数：5

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