Title :
Analysis of wireless optical CDMA using chip-level detection
Author :
Kozawa, Yusuke ; Habuchi, Hiromasa
Author_Institution :
Grad. Sch. of Sci. & Eng., Ibaraki Univ., Hitachi, Japan
Abstract :
In this paper, to achieve high maximum throughput performance, the optimum combination of the optical PN code and modulation scheme is presented. Moreover, bit error rate (BER) performances of the wireless OCDMA system using chip-level detection are evaluated from the theoretical analysis in the multi-user case. Consequently, in the wireless OCDMA system with the chip-level detection, the maximum throughput performance of the multi-pulse PPM (MPPM) systems with the optical pseudo noise code generated by M-sequence is better than that of the MPPM systems with optical orthogonal code and that of the MPPM system with extended prime code sequence.
Keywords :
code division multiple access; error statistics; optical modulation; orthogonal codes; pseudonoise codes; BER performances; M-sequence; bit error rate; chip-level detection; extended prime code sequence; modulation scheme; multipulse PPM systems; optical orthogonal code; optical pseudo noise code; wireless optical CDMA; Bit error rate; Multiaccess communication; Multiple access interference; Optical design; Optical modulation; Optical noise; Optical pulses; Optical sensors; Optical transmitters; Throughput; Chip-level detection; Multi-pulse PPM; Optical pseudo noise code; Wireless OCDMA;
Conference_Titel :
Signal Design and its Applications in Communications, 2009. IWSDA '09. Fourth International Workshop on
Conference_Location :
Fukuoka
Print_ISBN :
978-1-4244-4379-6
Electronic_ISBN :
978-1-4244-4380-2
DOI :
10.1109/IWSDA.2009.5346436
