Title :
Performance of code division multiple access in non-directed diffuse optical wireless channel
Author :
Shin, Dong Heon ; Park, Chanbum ; Lee, Jaie Hong
Author_Institution :
Dept. of Electron. Eng., Seoul Nat. Univ., South Korea
Abstract :
The optical wireless channel has abundant available bandwidth and is suitable for high data rate, indoor communications. In this paper, the performance of CDMA as a multiple access technique for optical wireless communication is examined. As the signature sequence, a (43,3,1,1) and a (63,3,1,1) optical orthogonal code (OOC) are used. Information data is modulated through a simple on-off keying (OOK) modulation scheme. A data rate of 2 Mbps is used and the bit error rate (BER) performance is simulated with respect to signal-to-noise ratio (SNR), number of users, and threshold values. It is possible to find the optimum number of users and the optimum threshold value from the results. It is seen that interference from other users actually helps to improve the BER performance, up to a certain number of users
Keywords :
amplitude shift keying; code division multiple access; codes; data communication; error statistics; intersymbol interference; optical communication; optical modulation; sequences; telecommunication channels; (43,3,1,1) optical orthogonal code; (63,3,1,1) optical orthogonal code; 2 Mbit/s; BER; CDMA; OOC; OOK; bit error rate performance; code division multiple access; high data rate indoor communications; information data; modulation scheme; nondirected diffuse optical wireless channel; number of users; on-off keying; performance; signal-to-noise ratio; signature sequence; threshold values; Bit error rate; Communication system security; Fading; Multiaccess communication; Optical fiber communication; Optical filters; Optical modulation; Optical noise; Optical receivers; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 1996. Mobile Technology for the Human Race., IEEE 46th
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3157-5
DOI :
10.1109/VETEC.1996.501539
