Title :
Multirate Spectral Phase-Encoded Time-Spreading O-CDMA System Using Orthogonal Variable Spreading Factor Code Sequences
Author :
Miyazawa, Takaya ; Sasase, Iwao
Author_Institution :
Nat. Inst. of Inf. and Commun. Technol., Tokyo
Abstract :
We propose a multirate spectral phase-encoded time- spreading optical code-division multiple-access system using orthogonal variable spreading factor code sequences. The proposed multirate access networking method can support differentiation on more bit-rate/bit-error-rate (BER) requirements. The proposed method can also improve the BER performances of higher rate users compared to the conventional single-rate system due to mitigation of the effect of optical beat interference.
Keywords :
code division multiplexing; error statistics; light interference; optical fibre communication; orthogonal codes; variable rate codes; OCDMA system; bit error rate; code sequences; multirate access networking; multirate spectral; optical beat interference; optical code-division multiple-access system; orthogonal variable spreading factor; phase encoded time spreading; Access protocols; Bit error rate; Bit rate; Information security; Multiaccess communication; Multiple access interference; Optical control; Optical fiber networks; Optical variables control; Passive optical networks; Multirate; optical beat interference (OBI); optical code-division multiple-access (O-CDMA); orthogonal variable spreading factor (OVSF) code sequences; spectral phase-encoded time-spreading (SPECTS);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.903876
