Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 2

Optical CDMA Related Publications

2 A Rapid Code Acquisition Scheme in OOC-Based CDMA Systems

Authors: Seokho Yoon, Keunhong Chae

Abstract:

We propose a code acquisition scheme called improved multiple-shift (IMS) for optical code division multiple access systems, where the optical orthogonal code is used instead of the pseudo noise code. Although the IMS algorithm has a similar process to that of the conventional MS algorithm, it has a better code acquisition performance than the conventional MS algorithm. We analyze the code acquisition performance of the IMS algorithm and compare the code acquisition performances of the MS and the IMS algorithms in single-user and multi-user environments.

Keywords: Optical CDMA, code acquisition, serial algorithm, optical orthogonal code

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1 A Fast Code Acquisition Scheme for O-CDMA Systems

Authors: Seokho Yoon, Youngpo Lee, Jaewoo Lee

Abstract:

This paper proposes a fast code acquisition scheme for optical code division multiple access (O-CDMA) systems. Unlike the conventional scheme, the proposed scheme employs multiple thresholds providing a shorter mean acquisition time (MAT) performance. The simulation results show that the MAT of the proposed scheme is shorter than that of the conventional scheme.

Keywords: Acquisition, Optical CDMA, MAT, multiple-shift

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