Title :
Cyclostationarity-based parameter estimation in multiuser communications systems
Author :
Napolitano, Antonio ; Tanda, Mario
Author_Institution :
Dipt. di Ingegneria Elettronica e delle Telecomunicazioni, Univ. di Napoli Federico II, Italy
Abstract :
This paper deals with the estimation of the parameters required in practical implementation of several multiuser detectors. Specifically, a blind algorithm for the estimation of amplitudes, phases, and relative time delays of each user in a multiple-access system is proposed. This algorithm is based on the cyclostationarity features of the received signals and provides estimates of the unknown parameters that are intrinsically immune to the effects of noise and interference. Moreover, it is not based on the usual assumption of Gaussian ambient noise
Keywords :
Gaussian noise; amplitude estimation; code division multiple access; delay estimation; multiuser channels; phase estimation; radiofrequency interference; signal detection; spread spectrum communication; CDMA; DS-CDMA; Gaussian ambient noise; PAM signal; amplitude estimation; blind algorithm; cyclostationarity-based parameter estimation; interference immunity; multiple-access system; multiplex received signals; multiuser communications systems; noise immunity; parameter estimation; phase estimation; radio channels; time delay estimation; Amplitude estimation; Delay effects; Delay estimation; Detectors; Frequency estimation; Gaussian noise; Interference; Maximum likelihood detection; Parameter estimation; Phase estimation;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.797204
