Title :
A Subspace-based Blind Channel Estimation For Zero-padded MC-CDMA
Author :
Wahab, Mashury ; Zoubir, A.M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Curtin Univ. of Technol., Perth, WA
Abstract :
A subspace-based blind channel estimation for multicarrier CDMA system employing zero-padding (ZP) technique is proposed in this paper. This ZP technique is mainly used for mitigating the effect of channel zeros on the performance of the MC-CDMA in the wireless channels. An adaptive algorithm for this channel estimation is also proposed in order to reduce the computational complexity. Performance evaluation is presented for downlink and uplink transmission in the presence of channel zeros. Simulation results show that the channel estimator and the MC-CDMA system perform well in the presence of channel zeros
Keywords :
channel estimation; code division multiple access; computational complexity; radio links; wireless channels; MC-CDMA; computational complexity; downlink transmission; subspace-based blind channel estimation; uplink transmission; wireless channels; zero-padding technique; Bit error rate; Blind equalizers; Channel estimation; Downlink; Fading; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; OFDM; Virtual colonoscopy;
Conference_Titel :
Communications, 2005 Asia-Pacific Conference on
Conference_Location :
Perth, WA
Print_ISBN :
0-7803-9132-2
DOI :
10.1109/APCC.2005.1554041
