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


Alsowaidi, Naif Ahmed Ali and A. Eltaif, Tawfig Ahmad and Mokhtar, Mohd Ridzuan (2015) Performance Analysis of SAC Optical PPM-CDMA System-Based Interference Rejection Technique. Journal of Optical Communications, 37 (1). pp. 87-92. ISSN 0173-4911

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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.

Item Type: Article
Uncontrolled Keywords: optical communication; pulse position modulation (PPM); interference cancellation
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering and Technology (FET)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 21 Nov 2017 09:52
Last Modified: 21 Nov 2017 09:52


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