Performance analysis of variable-weight multilength optical codes for wavelength-time O-CDMA multimedia systems

被引：28
|
作者：
Baby, Varghese [1 ]
Kwong, Wing C.
Chang, Cheng-Yuan
Yang, Guu-Chang
Prucnal, Paul R.
机构：
[1] McGill Univ, Dept Elect & Comp Engn, Photon Syst Grp, Montreal, PQ H3A 2A7, Canada
[2] Hofstra Univ, Dept Engn, Hempstead, NY 11549 USA
[3] Natl Chung Hsing Univ, Dept Elect Engn, Taichung 402, Taiwan
[4] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2007年 / 55卷 / 07期
关键词：
multimedia services; multiple length; optical code division multiple access; wavelength-time code; variable weight;
D O I：
10.1109/TCOMM.2007.900615
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
To support multimedia services with different discrete bit-rate requirements, families of multilength optical codes, such as the carrier-hopping prime code (CHPC), extended CHPC, and multiwavelength optical orthogonal code, were recently constructed for wavelength-time optical code-division multiple-access (O-CDMA). In this paper, the performances of these multilength optical codes in a multimedia O-CDMA system with a variable-weight operation are analyzed. Our study shows that short-length codes generate stronger interference than long-length codes. This supports services prioritization in O-CDMA. Our study also shows that code weight is a more important factor than code length in determining code performance.
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页码：1325 / 1333
页数：9
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