Title :
Channel estimation based on delay-subspace filter for uplink of CDM-OFDMA system
Author :
Huang, Lin ; Zheng, Kan ; Wang, Wenbo
Author_Institution :
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun.
Abstract :
In this paper, an uplink channel estimation scheme based on subspace filter is proposed for B3G CDM-OFDMA systems. This algorithm utilizes the slow varying multi-path delay sub-space to decrease the noise of LS estimation It requires fewer pilot sub-carriers than other algorithms and is practical because of its low complexity. So this scheme is very suitable for B3G system uplink since there are too many user channel parameters needed to estimate. Simulation results demonstrate that it Is an effective scheme for the multi-carrier system in the uplink
Keywords :
3G mobile communication; OFDM modulation; adaptive filters; channel estimation; code division multiplexing; multipath channels; radio links; B3G CDM-OFDMA system; multicarrier system; multipath delay-subspace filter; orthogonal frequency division multiplexing; parameters estimation; uplink channel estimation; Algorithm design and analysis; Channel estimation; Costs; Delay effects; Delay estimation; Design optimization; Filters; Frequency conversion; Frequency estimation; OFDM; Channel Estimation; Delay-subspace; OFDM; Uplink;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9128-4
DOI :
10.1109/MAPE.2005.1618189
