Performance of non-directed infrared CDMA

Author

Dhomeja, Sheyam Lal ; Oon, Tik Bin ; Steele, Raymond

Author_Institution

Dept. of Electron. & Comput. Sci., Southampton Univ., UK

Volume

1

fYear

1998

fDate

5-9 Oct 1998

Firstpage

453

Abstract

Expressions for the probability of bit error (p_e) for wireless infrared CDMA uplink transmissions in an office nanocell are presented as a function of the number of users in the presence of additive white Gaussian noise. The data modulation was on-off keying, and optical orthogonal codes (OOC) were used in the CDMA process. The choice of the length of the OOC, the number of 1s in the code and the detection threshold had a crucial effect on p_e. The analytical and simulation results were in close agreement. As an example of up-link performance, for 17 users, an SNR of 30 dB, an OOC code of 341 chips, having five logical 1s, a detection threshold parameter of the 4.2, the value of p_e was found to be 1.0×10^-4 in the absence of FEC coding

Keywords

AWGN; amplitude shift keying; code division multiple access; codes; error statistics; intensity modulation; optical communication; optical links; optical modulation; FEC coding; SNR; additive white Gaussian noise; bit error probability; data modulation; detection threshold; detection threshold parameter; intensity modulation; non-directed infrared CDMA; office nanocell; on-off keying; optical orthogonal codes; performance; simulation results; up-link performance; wireless IR CDMA uplink transmissions; Additive white noise; Analytical models; Bit rate; Fading; Infrared detectors; Intensity modulation; Interference; Multiaccess communication; Optical receivers; Optical transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Universal Personal Communications, 1998. ICUPC '98. IEEE 1998 International Conference on

Conference_Location

Florence

ISSN

1091-8442

Print_ISBN

0-7803-5106-1

Type

conf

DOI

10.1109/ICUPC.1998.733019

Filename

733019