Title :
A projection-based semi-blind channel estimation for long-code WCDMA
Author :
Sung, Youngchul ; Tong, Lang
Author_Institution :
School of Electrical and Computer Engineering, Cornell University, USA
Abstract :
The third generation (3G) wireless systems such as Wideband CDMA(WCDMA) employ coherent detection where pilot symbols for channel estimation are transmitted simultaneously with data using orthogonal channelization codes. The orthogonality of codes, unfortunately, is lost easily due to multipath delays. Furthermore, the use of long scrambling code introduces time variation in channel model. In this paper, based on the projection of time-varying subspaces, we present a semi-blind channel estimation technique for long code CDMA systems that use code division multiplexed pilot symbols.
Keywords :
Educational institutions; Estimation; Multiaccess communication; Power capacitors; Spread spectrum communication; Thyristors;
Conference_Titel :
Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-7402-9
DOI :
10.1109/ICASSP.2002.5745091
