Performance Analysis of MDSS Code Acquisition Using SLS for Optical CDMA Systems

Anh T. PHAM  Hiroyuki YASHIMA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E88-B   No.12   pp.4570-4577
Publication Date: 2005/12/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.12.4570
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
code acquisition and synchronization,  search/lock strategy,  optical code-division multiple-access,  optical orthogonal code,  

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Summary: 
We propose a multiple dwell serial search (MDSS) code acquisition for optical code-division multiple-access (O-CDMA) systems and theoretically analyze its performance. The search/lock strategy (SLS) is used as verification scheme for the multiple dwell detector. The operation of SLS is modeled by finite Markov chain to analyze the performance of the proposed system. Effect of system parameters, such as number of users, threshold and mean photon count per chip, on the performance of the proposed system is investigated. The theoretical result shows that the performance of the proposed system is less sensitive to parameter settings than the conventional single dwell serial search (SDSS) code acquisition system is. In addition, the proposed MDSS code acquisition system offers shorter mean acquisition time than that of conventional SDSS system.