Title :
Coding for a coherent DS-CDMA system employing an MMSE receiver in a Rayleigh fading channel
Author :
Foerster, J.R. ; Milstein, L.B.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
Abstract :
We consider the analysis and performance of convolutional coding for a direct sequence CDMA system employing an adaptive minimum mean square error (MMSE) receiver used for interference suppression in a time-varying, flat, Rayleigh fading channel. Analytical results are presented based upon the infinite interleaving assumption, perfect knowledge of the channel state information (CSI), and knowledge of the optimum MMSE filter coefficients. In addition, the effects of finite interleaving, channel estimation using pilot symbol assisted modulation (PSAM), and recursive least squares (RLS) adaptation of the filter coefficients are studied through extensive simulations
Keywords :
Rayleigh channels; adaptive filters; channel coding; code division multiple access; convolutional codes; interference suppression; least mean squares methods; modulation; recursive filters; spread spectrum communication; time-varying channels; MMSE receiver; Rayleigh fading channel; adaptive minimum mean square error receiver; channel state information; coherent DS-CDMA system; convolutional coding; direct sequence CDMA system; filter coefficients; finite interleaving; infinite interleaving; interference suppression; optimum MMSE filter coefficients; performance; pilot symbol assisted modulation; recursive least squares adaptation; time-varying flat Rayleigh fading channel; Adaptive systems; Convolutional codes; Fading; Filters; Interference suppression; Interleaved codes; Mean square error methods; Multiaccess communication; Performance analysis; Time varying systems;
Conference_Titel :
Information Theory, 1998. Proceedings. 1998 IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-5000-6
DOI :
10.1109/ISIT.1998.708886
