Title :
Fuzzy channel estimation in multipath fading CDMA channel
Author :
Niemi, Antti ; Joutsensalo, Jyrki ; Ristaniemi, Tapani
Author_Institution :
Dept. of Math. Inf. Technol., Jyvaskyla Univ., Finland
Abstract :
We study a multipath fading CDMA channel and introduce a fuzzy tracking method to estimate the complex channel coefficients in the downlink. The receiver is the conventional RAKE. The results given by the traditional alpha tracker, differential demodulation and known coefficients are compared to each other. In the presence of noisy conditions and many disturbing strong users, the fuzzy method seems promising
Keywords :
AWGN; Rayleigh channels; code division multiple access; demodulation; error statistics; fuzzy systems; land mobile radio; multipath channels; multiuser channels; parameter estimation; radio links; radio receivers; radio tracking; AWGN; BER; RAKE receiver; Rayleigh fading; additive white Gaussian noise; alpha tracker; complex channel coefficients; data reception; differential demodulation; downlink; fuzzy channel estimation; fuzzy tracking method; multiaccess interference; multipath fading CDMA channel; noisy conditions; AWGN; Channel estimation; Delay; Fading; Fuzzy systems; Gaussian noise; Information technology; Multiaccess communication; Rayleigh channels; Signal processing;
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.2000.881596
