Title :
Channel estimation for long-code WCDMA
Author :
Tong, L. ; van der Veen, A. ; Dewilde, P.
Author_Institution :
Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY, USA
Abstract :
A new blind and semiblind channel estimation for long code wideband CDMA is proposed based on the structure of RAKE receiver. Using a decorrelating matched filter, the received signal is projected into subspaces from which channel parameters and data symbols can be identified blindly via rank-one decompositions. A new identifiability condition is established. The mean square error of the estimated channel is compared with the Cramer-Rao bound, and a bit error rate (BER) expression for the proposed algorithm is presented
Keywords :
code division multiple access; codes; decorrelation; error statistics; matched filters; BER; Cramer-Rao bound; RAKE receiver; bit error; channel parameters; data symbols; decorrelating matched; long code wideband CDMA; mean square error; semiblind channel estimation; subspaces; Bit error rate; Channel estimation; Decorrelation; Fading; Matched filters; Mean square error methods; Multiaccess communication; Multipath channels; Signal processing; Wideband;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Conference_Location :
Phoenix-Scottsdale, AZ
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010308
