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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 23,
  • Issue 11,
  • pp. 3653-
  • (2005)

Multiple-Length Extended Carrier-Hopping Prime Codes for Optical CDMA Systems Supporting Multirate Multimedia Services

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Abstract

Extended carrier-hopping prime codes (ECHPCs) with ideal correlation properties (i.e., zero autocorrelation sidelobes and cross-correlation values of at most 1) and significantly expanded cardinality were recently constructed for wavelength-hopping time-spreading optical code division multiple access (O-CDMA). To support multimedia services with different bit-rate requirements, a new family of multiple-length constant-weight ECHPCs with ideal correlation properties is constructed algebraically in this paper. The performance of these new codes in an O-CDMA multimedia system is analyzed. Contrary to conventional single-length codes, our study shows that the performance of these multiple-length codes improves as the code length decreases, thus supporting prioritization in O-CDMA.

© 2005 IEEE

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