A new modulation scheme using asymmetric error-correcting codes embedded in optical orthogonal codes for optical CDMA

Katsuhiro Kamakura, Iwao Sasase

研究成果: Article査読

14 被引用数 (Scopus)

抄録

An embedded-modulation scheme is proposed for optical code division multiple access (CDMA). In this scheme, codewords in an asymmetric error-correcting (AEC) code is embedded in a signature sequence in an optical orthogonal code (OOC) used for identification. We classify the codewords of the AEC code according to the number of "1"s in each codeword, and then derive the bit error rate (BER) of the embedded-modulation scheme. Numerical results show that although the performance has the error floor, for achieving the floor value, the embedded-modulation scheme requires less optical energy per bit than the traditional modulation scheme with the correlation and chip-level receivers. The error floor is primarily due to multiaccess interference (MAI), we furthermore apply Reed-Solomon (RS) coding to the embedded-modulation scheme. Consequently, RS coding reduces the floor value to be negligibly small.

本文言語English
ページ(範囲)1839-1850
ページ数12
ジャーナルJournal of Lightwave Technology
19
12
DOI
出版ステータスPublished - 2001 12月

ASJC Scopus subject areas

  • 原子分子物理学および光学

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