Title :
Modified adaptive multiuser detector for DS-CDMA in multipath fading
Author :
Dutta, Amit K. ; Kiaei, Sayfe
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
Abstract :
Direct sequence code division multiple access (DS-CDMA) is the muitiplexing method used for the next generation of wireless digital standards. This paper deals with an asynchronous DS-CDMA system in which the receiver has knowledge of the signature waveform of all the users. In the presence of white Gaussian noise and channel fading, we propose an adaptive suboptimum detector for signal detection during every bit period. The performance of this detector has been compared to the one shot detector under Gaussian noise and channel fading condition
Keywords :
Gaussian noise; adaptive equalisers; adaptive signal detection; demodulation; digital radio; fading; interference suppression; land mobile radio; modulation; multipath channels; pseudonoise codes; radio receivers; radiofrequency interference; signal sampling; spread spectrum communication; DS-CDMA; adaptive equalization; adaptive suboptimum detector; asynchronous DS-CDMA system; bit period; channel fading; demodulators; direct sequence code-division multiple-access; interference rejection; mobile radio; modified adaptive multiuser detector; modulators; muitiplexing method; multipath fading; one shot detector; oversampling; performance; receiver; signal detection; signature waveform; white Gaussian noise; wireless digital standards; Bit error rate; Decorrelation; Demodulation; Detectors; Fading; Gaussian noise; Gunshot detection systems; Interference; Multiaccess communication; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.596310
