Title :
Analysis of infrared wireless links employing multi-beam transmitters and imaging diversity receivers
Author :
Djahani, Pouyan ; Kahn, Joseph M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
Abstract :
We analyze the improvements obtained in wireless infrared (IR) communication links when one replaces traditional single-element receivers by imaging receivers and diffuse transmitters by multi-beam (quasi-diffuse) transmitters. This paper addresses both line-of-sight (LOS) and non-line-of-sight (non-LOS) IR links. We quantify link performance in terms of the transmitter power required to achieve a bit error rate (BER) not exceeding 10-9 with 95% probability. Our results indicate that in LOS links, imaging receivers can reduce the required transmitter power by up to 13 dB compared to single-element receivers. In non-LOS links, imaging receivers and multi-beam transmitters can reduce the required transmitter power by more than 20 dB
Keywords :
diversity reception; error statistics; optical links; optical receivers; optical transmitters; BER; LOS IR links; bit error rate; diffuse transmitters; imaging diversity receivers; line-of-sight IR links; link performance; multi-beam transmitters; nonLOS IR links; nonline-of-sight IR links; probability; quasi-diffuse transmitters; single-element receivers; transmitter power reduction; wireless IR communication links; wireless infrared communication links; Image analysis; Infrared imaging; Optical distortion; Optical imaging; Optical noise; Optical receivers; Optical transmitters; Photodetectors; Radio transmitters; Signal to noise ratio;
Conference_Titel :
Global Telecommunications Conference, 1999. GLOBECOM '99
Conference_Location :
Rio de Janeireo
Print_ISBN :
0-7803-5796-5
DOI :
10.1109/GLOCOM.1999.831689
