Title :
Equal weight code sequence per slot for optical PPM-CDMA communication systems
Author :
Shalaby, Hossam M H ; Mangoud, Mohab A.
Author_Institution :
Alexandria Univ., Egypt
Abstract :
The performance of direct detection optical fiber pulse position modulation (PPM) code division multiple access (CDMA) communication systems with equal weight code sequence per slot (EWPS) is investigated. Upper bounds of bit error rates for such multibit transmission with multiple access schemes are estimated considering multiple-user interference (MUI) in the analysis. We investigate the performance with the assumption of Poisson shot noise model for the PIN photodiode and synchronization between users symbols. It is shown that the EWPS-PPM scheme outperforms the former on-off orthogonal (OOO)-PPM system especially when the pulse position multiplicity is low with average power constraint on the laser
Keywords :
code division multiple access; error statistics; optical fibre communication; optical modulation; pulse position modulation; shot noise; spread spectrum communication; stochastic processes; synchronisation; telecommunication signalling; PIN photodiode; Poisson shot noise model; bit error rates; code division multiple access; direct detection optical fiber communication; equal weight code sequence per slot; multibit transmission; multiple-user interference; optical PPM-CDMA communication; pulse position modulation; synchronization; upper bounds; Bit error rate; Interference; Modulation coding; Multiaccess communication; Optical detectors; Optical fibers; Optical modulation; Optical pulses; Pulse modulation; Upper bound;
Conference_Titel :
Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on
Conference_Location :
Mainz
Print_ISBN :
0-7803-3567-8
DOI :
10.1109/ISSSTA.1996.563744
