Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 23,
  • Issue 2,
  • pp. 740-
  • (2005)

Construction and Performance Analysis of Variable-Weight Optical Orthogonal Codes for Asynchronous Optical CDMA Systems

Not Accessible

Your library or personal account may give you access

Abstract

In this paper, two construction schemes of variable-weight optical orthogonal codes (OOCs) for asynchronous optical-code-division multiple-access (O-CDMA) systems are proposed. The first scheme uses pairwise balanced design (PBD), which is a research topic in combinatorial theory. PBD produces a family of blocks with unequal block size. Therefore, PBD can be used to construct OOCs with variable code weight. The lower bound of the code size of the codes from PBD is formulated in this paper. A second scheme employes packing design with a partition to generate blocks with unequal block sizes. The variable-weight OOCs can be constructed by partitioning a larger weight codeword into a family of codes with a smaller code weight. The upper bound and lower bound of the code size of the second scheme are discussed. The bit-error-rate (BER) performances of the two proposed codes are evaluated analytically in this paper. The simulation results show that the codes from the first scheme have the same BER performance as that of conventional code, while the second scheme has a larger maximum number of simultaneous users than that of conventional codes.

© 2005 IEEE

PDF Article
More Like This
Design of a Hybrid Multirate Asynchronous O-CDMA System: Performance, Spectral Efficiency, and Throughput Analyses

Han-Chun Chen, Min-Kuan Chang, Guu-Chang Yang, and Wing C. Kwong
J. Opt. Commun. Netw. 7(11) 1034-1048 (2015)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved