Comparison of decision-directed and pilot-aided algorithms for complex channel tap estimation in a downlink WCDMA system

Author

Zhuang, Anna ; Lohan, Elena-Simona ; Renfors, Markku

Author_Institution

Nokia Mobile Phones, Tampere, Finland

Volume

2

fYear

2000

fDate

2000

Firstpage

1121

Abstract

We evaluate three decision-directed algorithms for complex multipath channel tap estimation in the downlink wideband CDMA (WCDMA) system. These algorithms are tested with indoor and vehicular channel models at different mobile velocities and their performance is compared with ideal channel estimation, as well as with estimation based on linear interpolation

Keywords

broadband networks; code division multiple access; decision theory; fading channels; feedback; feedforward; indoor radio; interpolation; land mobile radio; multipath channels; multiuser channels; parameter estimation; radio links; radio networks; complex multipath channel tap estimation; decision-directed algorithms; downlink WCDMA system; fading; feedback structure; feedforward structure; ideal channel estimation; indoor channel model; linear interpolation; mobile velocities; performance comparison; pilot-aided algorithms; simulation results; third generation WCDMA mobile systems; time-multiplexed pilot symbols; vehicular channel model; Channel estimation; Delay estimation; Downlink; Fading; Interpolation; Mobile handsets; Multiaccess communication; Multipath channels; Robustness; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on

Conference_Location

London

Print_ISBN

0-7803-6463-5

Type

conf

DOI

10.1109/PIMRC.2000.881594

Filename

881594