Title :
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
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;
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
DOI :
10.1109/PIMRC.2000.881594
