Title :
FFT-HQ Channel Estimating Algorithm in MB-OFDM UWB System
Author :
Li, Jianqiang ; Bao, Zhihua ; Zhang, Shibing
Author_Institution :
Sch. of Electron. & Inf., Nantong Univ., Nantong, China
Abstract :
Channel estimation is an essential technique for the orthogonal frequency division multiplexing (OFDM) based ultra-wide band (UWB) system. In this paper, a novel channel estimating method, fast Fourier transform-Hannan-Quinn(FFT-HQ) algorithm, is proposed. Based on the estimated channel response, the algorithm weighted the eigenvalue of the estimated channel response and obtained the length of rectangular window. Therefore, the windowed UWB channel response is found. The simulations showed that the FFT-HQ algorithm has 1~2 dB margins over FFT-based algorithm.
Keywords :
OFDM modulation; channel estimation; eigenvalues and eigenfunctions; fast Fourier transforms; ultra wideband communication; channel response estimation; eigenvalue; fast Fourier transform-Hannan-Quinn algorithm; multiband-OFDM UWB system; orthogonal frequency division multiplexing; ultra-wide band system; Bit error rate; Channel estimation; Estimation; Frequency response; OFDM; Signal to noise ratio; Training; Hannan-Quinnt; OFDM; UWB; Wireless Communications; channel estimation;
Conference_Titel :
Communications and Mobile Computing (CMC), 2011 Third International Conference on
Conference_Location :
Qingdao
Print_ISBN :
978-1-61284-312-4
DOI :
10.1109/CMC.2011.97
