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標題: Multiple-length extended carrier-hopping prime codes for optical CDMA systems supporting multirate multimedia services
作者: Kwong, W.C.
Yang, G.C.
關鍵字: multimedia services
optical code division multiple access (O-CDMA)
wavelength-time code
orthogonal codes
wireless systems
期刊/報告no:: Journal of Lightwave Technology, Volume 23, Issue 11, Page(s) 3653-3662.
摘要: Extended carrier-hopping prime codes (ECHPCs) with ideal correlation properties (i.e., zero autocorrelation side-lobes 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.
ISSN: 0733-8724
Appears in Collections:通訊工程研究所



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