Title :
Iterative B-spline channel estimation for fast flat fading channels
Author :
Mai, Huiheng ; Zakharov, Yuriy V. ; Burr, Alister G.
Author_Institution :
Dept. of Electron., York Univ., UK
Abstract :
A novel B-spline iterative channel estimation technique over fast flat fading channels is proposed. Both local linear and parabolic splines are considered. The optimal sampling interval is found by simulations and then approximated by a simple equation. Comparisons with the Wiener filtering approach in mean square error (MSE), bit error rate (BER) and complexity are given. The BER performance of the iterative receiver with the proposed estimators is very close, within 0.3 dB for BER = 10-4 of that of the Wiener estimator for fading rates up to fdTs = 0.02. However, the proposed estimators require only a few multiplications per symbol per iteration which is only a small fraction of that of the Wiener filter.
Keywords :
Wiener filters; channel estimation; error statistics; fading channels; filtering theory; iterative methods; mean square error methods; splines (mathematics); B-spline iterative channel estimation technique; BER; Wiener filtering approach; bit error rate; fast flat fading channel; linear spline; mean square error; parabolic spline; Bit error rate; Channel estimation; Fading; Mean square error methods; Sampling methods; Signal to noise ratio; Spline; Transmitters; Turbo codes; Wiener filter;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1494717