Title :
On the performance of a discrete time RAKE
Author :
Boujemaa, Hatem ; Fratu, Octavian ; Siala, Mohamed ; Loubaton, Philippe
Author_Institution :
France Telecom, CNET, France
Abstract :
A discrete time implementation of the RAKE receiver (DTR) is proposed. The suggested approach works without knowledge of the path delays and their number. It is based on a global estimation of the multipath channel convolutioned with the shaping filter. Since the DTR performance is very sensitive to the channel estimation quality, we suggest a disregarding method for the least significant estimated channel coefficients while taking into account the known impulse response of the shaping filter. The performance of the DTR and the conventional RAKE are then compared
Keywords :
delays; filtering theory; matched filters; multipath channels; parameter estimation; radio receivers; spread spectrum communication; transient response; DS-SS; channel estimation; direct sequence spread spectrum systems; discrete time RAKE; global estimation; impulse response; matched filter; multipath channel; performance; performance receiver; shaping filter; Blind equalizers; Channel estimation; Delay estimation; Fading; Matched filters; Multi-stage noise shaping; Multipath channels; Noise shaping; Spread spectrum communication; Telecommunications;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-6463-5
DOI :
10.1109/PIMRC.2000.881562
