Unipolar codes with ideal in-phase cross-correlation for spectral amplitude-coding optical CDMA systems

被引：50

作者：

Wei, Z ^{[1
]}

Ghafouri-Shiraz, H ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2002年 / 50卷 / 08期

关键词：

balanced incomplete block design; frequency hopping code; ideal in-phase cross-correlation; optical CDMA; quadratic congruence code;

D O I：

10.1109/TCOMM.2002.800826

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：

Unipolar codes with ideal in-phase cross-correlation are important in spectral amplitude-coding optical code-division multiple-access (CDMA) systems since these codes eliminate multiuser interference and also suppress the effect of phase-induced intensity noise. However, very little research work has been done on such codes although codes with ideal cross-correlation have been studied for many years. In the paper by Zhou et al., such a code has been introduced without a clear construction method. In this paper, we firstly review this old code, and then construct two new codes with ideal in-phase cross-correlation in algebraic ways. Both of the proposed new codes are obtained by modifying former codes with ideal cross-correlation. It has been shown that the system performance can be improved significantly by using codes with ideal in-phase cross-correlation instead of Hadamard code. These codes can also be used in synchronous optical CDMA systems for multiuser interference cancellation.

引用

页码：1209 / 1212

页数：4

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