Title :
Time correlation based maximum Doppler frequency estimator for W-CDMA receiver
Author :
Sakamoto, Mitsuo ; Akaiwa, Yoshihiko
Author_Institution :
Nokia Res. Center, Tokyo, Japan
fDate :
6/23/1905 12:00:00 AM
Abstract :
Channel estimation is an important technique for compensating the signal against fading effects. Optimal channel estimation requires information of the vehicle speed or the maximum Doppler frequency. We developed a time correlation based maximum Doppler frequency estimator for the optimal channel estimation. We evaluated its performance and applied it to a CDMA RAKE receiver under a multipath fading channel. The proposed scheme can accomplish the features of a wide detection range i.e., from low Doppler frequency to 380 Hz, while achieving a low mean square estimation error of 10% under a multipath environment
Keywords :
Doppler effect; broadband networks; code division multiple access; compensation; fading channels; frequency estimation; mean square error methods; mobile radio; multipath channels; radio receivers; CDMA RAKE receiver; Doppler frequency; W-CDMA receiver; channel estimation; detection range; fading effects; mean square estimation error; multipath fading channel; optimal channel estimation; time correlation based maximum Doppler frequency estimator; Channel estimation; Demodulation; Estimation error; Fading; Filters; Frequency estimation; Multiaccess communication; Multipath channels; Receivers; Vehicle detection;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.957227
