Title :
Adaptive receiver for DS-CDMA systems over flat fading channels
Author :
Tantikovit, S. ; Li, E.C. ; Wang, M.Z.
Author_Institution :
Dept. of Electron. Eng., Hong Kong Polytech., Kowloon, Hong Kong
fDate :
29 Sep-2 Oct 1996
Abstract :
An adaptive receiver with multiple tap-weight vectors is proposed to cancel multiple-access interference in direct-sequence code-division multiple-access systems. The receiver exploits the periodicity of the interference when the spreading sequence length is larger than system processing gain. Moreover, blind startup, which means startup without any known training sequence is possible with no loss of performance. A coded system is also investigated over fading channels. Further improvement can be attained with a modified algorithm which uses the decoded code word for the tap-weight adaptation
Keywords :
Gaussian channels; Hamming codes; adaptive filters; adaptive signal detection; code division multiple access; fading; interference suppression; pseudonoise codes; radio receivers; spread spectrum communication; AWGN channel; DS-CDMA systems; Hamming code; adaptive receiver; blind startup; decoded code word; direct-sequence code-division multiple-access; flat fading channels; interference periodicity; multiple tap-weight vectors; multiple-access interference cancellation; spreading sequence length; tap-weight adaptation; AWGN; Adaptive filters; Bandwidth; Base stations; Decoding; Degradation; Fading; Interference cancellation; Multiaccess communication; Multiple access interference; Performance loss;
Conference_Titel :
Universal Personal Communications, 1996. Record., 1996 5th IEEE International Conference on
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-3300-4
DOI :
10.1109/ICUPC.1996.557868
