Title :
A New Method of Channel Estimation for OFDM Systems Based on Discrete Wavelet Transform
Author :
Shi Hui ; Zhuo Dong-feng ; Yong, Yang
Author_Institution :
Coll. of Electron. Inf. & Eng., Taiyuan Univ. of Sci. & Technol., Taiyuan
Abstract :
In the near future along with the advent of WIMAX, 3GPP has also started a long-term evolution of UMTS technology project. Presently, the basic channel transmission technology of uplink and downlink has been determined, up-SC (single carrier)-FDMA, downlink using orthogonal frequency division multiplexing technology. Characteristic specifically for the wireless decaying channel, a new channel estimation method on OFDM systems was given based on discrete wavelet transform in this article. Channel estimation signal was adapted by the discrete wavelet transform in the time- frequency and transform domain. Such method could better track channel change and eliminate the noise remarkably in the received pilot signal, and the precision of channel estimation had been improved.
Keywords :
OFDM modulation; channel estimation; discrete wavelet transforms; time-frequency analysis; wireless channels; OFDM system; channel estimation; discrete wavelet transform; orthogonal frequency division multiplexing technology; time-frequency domain; transform domain analysis; wireless decaying channel; Channel estimation; Companies; Control systems; Costs; Discrete wavelet transforms; Engineering management; Game theory; OFDM; Personnel; Product design; channel estimation; discrete wavelet transform; orthogonal frequency division multiplexing; time domain; transform domain;
Conference_Titel :
Future BioMedical Information Engineering, 2008. FBIE '08. International Seminar on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-0-7695-3561-6
DOI :
10.1109/FBIE.2008.72
