Theoretical Analysis of Optical Wireless CDMA with Modified Pseudo Orthogonal M-Sequence Sets

Author

Kozawa, Yusuke ; Habuchi, Hiromasa

Author_Institution

Coll. of Eng., Ibaraki Univ., Ibaraki, Japan

fYear

2009

Firstpage

1

Lastpage

6

Abstract

In this paper, to increase normalized throughput of the optical wireless code-division multiple-access (CDMA) system, modified pseudo orthogonal M-sequences (MPOMS) are considered as optical pseudo-noise (PN) code. Moreover, the bit error rate (BER) performance of the optical wireless CDMA system using multi-pulse pulse position modulation (MPPM) is also derived in the presence of the scintillation, background-noise, avalanche photo-diode (APD) noise, thermal noise and signal dependence noise. Consequently, the BER performance in consideration of normalized throughput of the MPPM system with MPOMS is superior to that of the MPPM system with conventional pseudo orthogonal M-sequences in the single-user case and multi-user case.

Keywords

code division multiple access; error statistics; noise; optical communication; avalanche photodiode noise; background noise; bit error rate performance; modified pseudo orthogonal M-sequences; modified pseudoorthogonal m-sequence sets; multipulse pulse position modulation; normalized throughput; optical pseudonoise code; optical wireless CDMA system; optical wireless code-division multiple-access system; scintillation; signal dependence noise; thermal noise; Biomedical optical imaging; Bit error rate; Code division multiplexing; Multiaccess communication; Optical modulation; Optical noise; Optical sensors; Optical transmitters; Throughput; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE

Conference_Location

Honolulu, HI

ISSN

1930-529X

Print_ISBN

978-1-4244-4148-8

Type

conf

DOI

10.1109/GLOCOM.2009.5426179

Filename

5426179