Title :
A tapped delay line model of multipath channel for CDMA systems
Author :
Saadani, Ahmed ; Wendt, Stefan ; Gelp, P. ; Duponteil, Daniel
Author_Institution :
France Telecom R&D, Issy-les-Moulineaux, France
Abstract :
In CDMA systems, the RAKE finger outputs are correlated by the pulse shaping filters when the multipath channel delays are not multiples of the chip duration. This paper presents an equivalent tapped delay line channel that eliminates this correlation and reduces simulation complexity. The RAKE output processes of the two channels are proven to be equal. The equivalent channel paths are statically independent and their number can often be reduced with no performance loss.
Keywords :
code division multiple access; computational complexity; correlation methods; delay lines; fading channels; filtering theory; mobile radio; multipath channels; pulse shaping; radio receivers; CDMA systems; RAKE finger outputs; code division multiple access; multipath channel delays; pulse shaping filters; tapped delay line model; Autocorrelation; Covariance matrix; Delay lines; Fading; Filters; Multiaccess communication; Multipath channels; Performance loss; Research and development; Sampling methods;
Conference_Titel :
Control, Communications and Signal Processing, 2004. First International Symposium on
Print_ISBN :
0-7803-8379-6
DOI :
10.1109/ISCCSP.2004.1296562
