Title :
Performance of multicode direct-detection optical CDMA systems
Author :
Ohtsuki, Tomoaki
Author_Institution :
Dept. of Electr. Eng., Sci. Univ. of Tokyo, Japan
Abstract :
We analyze the performance of multicode direct-detection optical code-division multiple-access (CDMA) systems supporting several kinds of data with different bit rates: each user is assigned a set of sequence codes generated from time-shifted versions of optical orthogonal codes (OOCs). We analyze the performance of multicode direct-detection optical CDMA systems by using the mean value of the maximum cross-correlation between a sequence code and a set of sequence codes. We evaluate the performance of the systems under a fixed bit rate for each sequence code. Our results show that the multicode direct-detection optical CDMA system can support several kinds of data with different bit rates in optical fiber networks. Moreover, we show that the multicode direct-detection optical CDMA system has a better performance than a system using one sequence code for each user at the same bit and chip rates
Keywords :
Gaussian processes; approximation theory; avalanche photodiodes; code division multiple access; correlation methods; optical fibre networks; optical signal detection; sequential codes; Gaussian approximation; avalanche photodiodes; bit error probability; bit rates; chip rates; code-division multiple-access; maximum cross-correlation; multicode direct-detection optical CDMA systems; optical fiber networks; performance analysis; sequence codes; time-shifted optical orthogonal codes; Avalanche photodiodes; Bit rate; Multiaccess communication; Multimedia systems; Optical detectors; Optical fiber communication; Optical fiber networks; Performance analysis; Real time systems; Telecommunication traffic;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.775734
