Title :
Performance of blind channel estimation in long code DS-CDMA systems
Author :
Iglesia, Daniel I. ; Escudero, Carlos J. ; Castedo, Luis
Author_Institution :
Departamento de Electronica y Sistemas, Univ. de A Coruna, Spain
Abstract :
We obtain the Cramer-Rao bound for blind channel estimation in DS-CDMA systems employing randomized spreading codes with periods longer than a symbol duration. The motivation for such a study is to provide a limit that can be used to illustrate the performance of different algorithms proposed to estimate the channel in this type of scenarios. Numerical results show how the algorithms performance is influenced by the parameters of the environment.
Keywords :
channel estimation; code division multiple access; dispersive channels; multiuser channels; random codes; spread spectrum communication; Cramer-Rao bound; algorithms performance; blind channel estimation; code period; dispersive channel; environment parameters; long code DS-CDMA systems; pseudorandom codes; randomized spreading codes; symbol duration; Blind equalizers; Multiaccess communication;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on
Print_ISBN :
0-7803-7627-7
DOI :
10.1109/ISSSTA.2002.1049318
