Title :
Direct sequence spread-spectrum multiple access system performance in an indoor milieu characterized by a Rician channel
Author :
Lim, E.C. ; Galko, P.
Author_Institution :
Dept. of Electr. Eng., Ottawa Univ., Ont., Canada
Abstract :
The performance of a direct-sequence spread-spectrum multiple-access (DS/SS-MA) system operating in an indoor milieu characterized by a Rician fading multipath channel is evaluated. The system uses selection diversity and differential phase shift keying as the modulation. The performance of the system is presented for Rician channels with parameters derived from reported actual channel measurements at data rates of 32, 64, and 144 kb/s. It is found that the performance of these systems can be enhanced by exploiting the frequency diversity characteristic inherent in DS/SS signals. It is shown that the improvement in system performance is greatest when space diversity reception operates in tandem with DS/SS modulation.<>
Keywords :
fading; multi-access systems; radiowave propagation; spread spectrum communication; telecommunication channels; 144 kbit/s; 32 kbit/s; 64 kbit/s; Rician channel; differential phase shift keying; direct-sequence; fading; radiowave propagation; selection diversity; space diversity; spread-spectrum multiple access system; Base stations; Cellular networks; Differential phase shift keying; ISDN; Multipath channels; Phase modulation; Rician channels; Spread spectrum communication; System performance; Wireless communication;
Conference_Titel :
Communications, Computers and Signal Processing, 1989. Conference Proceeding., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC, Canada
DOI :
10.1109/PACRIM.1989.48318
