Title :
Multipath channel estimation for WCDMA uplink
Author :
Huang, Aiping ; Hall, Michael ; Hartimo, Iiro
Author_Institution :
Dept. of Inf. Sci., Zhejiang Univ., China
Abstract :
A novel multipath channel estimation method is proposed to solve a special problem that occurs in channel estimation for ETSI´s WCDMA uplink communications, where scrambling is introduced in the dedicated physical channels. The delays and complex amplitudes of the multipath components are estimated. A matched filter is employed for each user to carry out the despreading and unscrambling simultaneously. The filter coefficients are a combination of the OVSF code and the preliminary scrambling code for the user. An averaging operation reduces the noise and interference, and thus improves the estimates
Keywords :
amplitude estimation; broadband networks; channel coding; code division multiple access; decoding; delay estimation; filtering theory; interference suppression; land mobile radio; matched filters; multipath channels; multiuser channels; parameter estimation; radio links; radiofrequency interference; ETSI; OVSF code; WCDMA uplink; amplitude estimation; delay estimation; despreading; filter coefficients; interference reduction; matched filter; mobile communication systems; multipath channel estimation; multipath components; noise reduction; scrambling; scrambling code; unscrambling; Amplitude estimation; Channel estimation; Delay estimation; Interference; Matched filters; Mobile communication; Multiaccess communication; Multipath channels; Telecommunication standards; Transmitters;
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.1999.797073
