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.

Volume

2

fYear

2005

Firstpage

1415

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/MAPE.2005.1618189

Filename

1618189