Title :
An optimum single-user detector for asynchronous DS-CDMA radio based systems
Author :
Farrell, Timothy O.
Author_Institution :
Dept. of Electron. & Electr. Eng., Leeds Univ., UK
Abstract :
A significant limitation to the capacity of conventional DS-CDMA systems is the interference produced by other users. A potential solution to this problem is the optimum multi-user detector or its suboptimal derivatives. However, such multi-user detectors are currently too complex to implement in commercial systems. An optimum single-user detector for asynchronous DS-CDMA radio systems is considered and its bit error rate performance evaluated in a multipath fading channel. The detector achieves a significant capacity improvement over the conventional single-user detector for a modest increase in complexity
Keywords :
Gaussian channels; Rayleigh channels; code division multiple access; coding errors; error statistics; fading; interference suppression; multipath channels; optimisation; pseudonoise codes; radiofrequency interference; signal detection; spread spectrum communication; Gaussian channels; Rayleigh fading channels; asynchronous DS-CDMA radio systems; bit error rate performance; capacity improvement; detector complexity; interference; multipath fading channel; optimum single-user detector; AWGN; Autocorrelation; Baseband; Bit error rate; Delay; Detectors; Fading; Multiaccess communication; Multiple access interference; Wireless communication;
Conference_Titel :
Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on
Conference_Location :
Mainz
Print_ISBN :
0-7803-3567-8
DOI :
10.1109/ISSSTA.1996.563461
