Pilot-symbol assisted channel estimation for coherent DS-CDMA communications

Author

Hai-wei Wang ; Wei, Che-Ho

Author_Institution

Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

3

fYear

2000

fDate

2000

Firstpage

383

Abstract

Coherent uplink detection of an asynchronous CDMA terrestrial radio system is feasible with a pilot-assisted channel estimation. In this paper, we present an interpolated M-slot averaging scheme for pilot-symbol assisted channel estimation. The M-slot averaging samples are input to a Lagrange interpolator to obtain the desired channel estimates. The hardware of this new scheme is simpler than the modified weighted multi-slot averaging (WMSA) estimation filter with comparable tracking ability

Keywords

code division multiple access; estimation theory; fading channels; interpolation; quadrature phase shift keying; spread spectrum communication; Lagrange interpolator; asynchronous CDMA terrestrial radio system; coherent DS-CDMA communications; coherent uplink detection; interpolated M-slot averaging scheme; pilot-symbol assisted channel estimation; tracking ability; Background noise; Channel estimation; Fading; Filters; Gaussian noise; Land mobile radio cellular systems; Multiaccess communication; Multiple access interference; Quadrature phase shift keying; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on

Conference_Location

Geneva

Print_ISBN

0-7803-5482-6

Type

conf

DOI

10.1109/ISCAS.2000.856077

Filename

856077