Title :
Theoretical Analysis of Atmospheric Optical PPM CDMA with Pseudo-orthogonal M-sequences
Author :
Kozawa, Yusuke ; Habuchi, Hiromasa
Author_Institution :
Ibaraki Univ., Hitachi
Abstract :
In this paper, the atmospheric optical code-division multiple- access (CDMA) system with Pseudo-orthogonal M-sequences is proposed. The bit error rate (BER) of the proposed system using pulse position modulation (PPM) by taking into account the effects of the scintillation, avalanche photo-diode (APD) noise, thermal noise, and multiple access interference (MAI) are analyzed. By comparing with the optical orthogonal code (OOC) and the prime code, the proposed system with pseudo- orthogonal M-sequences is better than the systems with other PN codes. But, the scintillation has an enormous effect on the performance of the proposed system.
Keywords :
code division multiple access; error statistics; m-sequences; optical links; atmospheric optical CDMA; atmospheric optical code-division multiple-access system; avalanche photo-diode noise; bit error rate; multiple access interference; optical orthogonal code; pseudo-orthogonal M-sequences; pulse position modulation; thermal noise; Bit error rate; Multiaccess communication; Multiple access interference; Optical design; Optical fiber communication; Optical modulation; Optical noise; Optical pulses; Optical sensors; Pulse modulation;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394610
