Title :
Wideband-CDMA channel estimation: a data-aided multi-slot averaging method
Author :
Han, Xi-Bin ; Zhu, Wei-Ping
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
In this paper, a two-step channel estimation scheme is presented for downlink wideband code division multiple access (W-CDMA) communication systems. The proposed method employs the time multiplexed pilot symbols for an initial coarse estimation followed by a data-aided fine estimation in order to achieve a fast and accurate estimation of the complex channel gain. Our simulation shows that the proposed method works very well for both slow and fast fading channels. The computational complexity required by the proposed estimation is significantly reduced compared to some of the existing estimation techniques.
Keywords :
channel estimation; code division multiple access; communication complexity; fading channels; radio links; time division multiplexing; channel gain estimation; computational complexity; data aided multislot averaging method; downlink wideband code division multiple access; fading channels; time multiplexed pilot symbols; wideband CDMA communication systems; Channel estimation; Delay estimation; Downlink; Fading; Filters; Frequency; Multiaccess communication; Time division multiplexing; Wideband; Yield estimation;
Conference_Titel :
Circuits and Systems, 2004. MWSCAS '04. The 2004 47th Midwest Symposium on
Print_ISBN :
0-7803-8346-X
DOI :
10.1109/MWSCAS.2004.1353925