Title :
Two-dimensional M-matrices coding in spatial/frequency optical CDMA networks
Author :
Yang, Chao-Chin ; Huang, Jen-Fa
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
A spatial/frequency encoder-decoder scheme is proposed for optical code-division multiple-access (OCDMA) communications. The coders adopt codewords with multiple-weight-per-row property and can be realized via compact hardware. With the proposed decoding scheme, an intended user will reject any interfering user and theoretically achieve quasiorthogonality between OCDMA users. The performance degradation due to various noise sources in previous discussed one-dimensional coding scheme can be improved.
Keywords :
Bragg gratings; code division multiple access; decoding; m-sequences; optical correlation; optical fibre networks; M-sequence coding; OCDMA users; codewords; compact hardware; correlation decoding; decoding scheme; double-balanced detector structure; fiber Bragg gratings; interfering user rejection; maximal-area matrices; multiple-access interference; multiple-weight-per-row property; noise sources; optical code-division multiple-access communications; performance degradation; quasiorthogonality; spatial/frequency encoder-decoder scheme; spatial/frequency optical CDMA networks; two-dimensional M-matrices coding; Decoding; Degradation; Frequency; Hardware; Intelligent networks; Multiaccess communication; Multiple access interference; Optical fiber networks; Optical noise; Optical transmitters;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.805780
