Title :
One-shot signal detection in asynchronous CDMA systems
Author :
Shi, Zhen-Liang ; Driessen, Peter F. ; Du, Weixiu
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
One-shot multiuser detectors in asynchronous CDMA (code division multiple access) systems are studied. This type of detector is shown to be near-far resistant, although only parts of the interfering symbols are estimated to conduct the multiuser detector for the desired signal. Performance of the one-shot detectors usually depends upon the delay distribution of users, which may result in some performance variation. However, by proper design of the PN (pseudonoise) sequences and the number of users in a system, the variation can be limited within a very small range
Keywords :
code division multiple access; error statistics; intersymbol interference; pseudonoise codes; sequences; signal detection; spread spectrum communication; asynchronous CDMA systems; code division multiple access; delay distribution of users; design; interfering symbols; multiuser detectors; one-shot detectors; performance variation; pseudonoise sequences; Delay; Detectors; Frequency diversity; Maximum likelihood detection; Multiaccess communication; Multiuser detection; Resistance; Signal detection; Statistics; Time division multiple access;
Conference_Titel :
Communications, Computers and Signal Processing, 1993., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0971-5
DOI :
10.1109/PACRIM.1993.407267