Title :
Nonuniform Spectral Phase Encoding in Optical CDMA Networks
Author :
Du, Yixue ; Yoo, S.J.B. ; Ding, Zhi
Author_Institution :
California Univ., Davis, CA
Abstract :
We utilize a nonuniform encoding scheme for spectral phase encoding in optical code-division-multiple-access networks. This method improves the orthogonality of encoded waveforms between multiple users under synchronous transmission by compensating for the nonideal spectral shape of the subpicosecond mode-locked laser pulse source. Simulation results demonstrate five orders of magnitude of bit-error-rate reduction compared with the traditional uniform encoding scheme
Keywords :
code division multiple access; error statistics; laser mode locking; optical fibre networks; optical pulse generation; phase coding; bit-error-rate reduction; mode-locked laser pulse source; optical CDMA networks; optical code-division-multiple-access networks; orthogonality; spectral phase encoding; Decoding; Encoding; Frequency; Interference; Laser mode locking; Multiaccess communication; Optical fiber networks; Optical pulses; Optical receivers; Pulse modulation; Multiple-user interference (MUI); optical code-division mupltiple-access (O-CDMA); spectral phase encoded time spreading (SPECTS);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.887228
