Title :
Multistage interference cancellation with decision directed channel estimation in multirate DS/CDMA on a mobile radio channel
Author :
Johansson, Ann-Louise ; Svensson, Arne
Author_Institution :
Dept. of Inf. Theory, Chalmers Univ. of Technol., Goteborg, Sweden
fDate :
29 Sep-2 Oct 1996
Abstract :
A combination of a hybrid interference cancellation (IC) scheme and decision directed channel estimation is proposed for the uplink of multirate direct-sequence code division multiple access (DS/CDMA) systems communicating over mobile radio channels. The hybrid IC scheme includes both non-decision directed and decision directed IC, joined together with a modified RAKE combiner for utilization of the diversity. The channel estimator is a decision directed minimum mean square error estimator that utilizes the fading correlation. The performance is evaluated via computer simulations for a multiple data rate scheme, parallel channels, in a multipath environment
Keywords :
Rayleigh channels; cellular radio; code division multiple access; diversity reception; fading; interference suppression; land mobile radio; multipath channels; parameter estimation; quadrature amplitude modulation; radiofrequency interference; spread spectrum communication; computer simulations; decision directed channel estimation; decision directed minimum mean square error estimator; diversity; fading correlation; hybrid IC scheme; mobile radio channel; modified RAKE combiner; multipath environment; multiple data rate scheme; multirate DS/CDMA; multirate direct-sequence code division multiple access; multistage interference cancellation; parallel channels; performance; uplink; Channel estimation; Computer simulation; Detectors; Fading; Hybrid integrated circuits; Information theory; Interference cancellation; Land mobile radio; Mean square error methods; Multiaccess communication; Multiple access interference; Quadrature amplitude modulation;
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.1996.557912
