Title :
Optimal pilot tones design for channel estimation in OFDM systems under doppler spread channel
Author :
Wang, Han ; Wang, Jinkuan
Author_Institution :
Northeastern Univ., Shenyang
fDate :
Nov. 28 2007-Dec. 1 2007
Abstract :
In this paper, under Doppler spread channel, in order to reduce the error of channel estimation caused by Doppler spread, the optimal pilot tones is proposed with respect to the mean square error (MSE) of least square (LS) channel estimation in the wireless orthogonal frequency division multiplexing (OFDM) systems. It is shown that the phase shift is needed based on conventional equipowered, equispaced pilot tones design scheme. Simulation results demonstrate the effectiveness of the proposed approach.
Keywords :
Doppler broadening; OFDM modulation; channel estimation; Doppler spread channel; MSE; OFDM; channel estimation; mean square error; phase shift; pilot tones design; spread channel; wireless orthogonal frequency division multiplexing; Channel estimation; Design engineering; Digital audio broadcasting; Frequency division multiplexing; Frequency estimation; OFDM; Receiving antennas; Signal design; Signal processing; TV broadcasting; Doppler spread; LS channel estimation; OFDM; optimal pilot tones;
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2007. ISPACS 2007. International Symposium on
Conference_Location :
Xiamen
Print_ISBN :
978-1-4244-1447-5
Electronic_ISBN :
978-1-4244-1447-5
DOI :
10.1109/ISPACS.2007.4445961
