Optimal pilot tones design for channel estimation in OFDM systems under doppler spread channel

Author

Wang, Han ; Wang, Jinkuan

Author_Institution

Northeastern Univ., Shenyang

fYear

2007

fDate

Nov. 28 2007-Dec. 1 2007

Firstpage

610

Lastpage

613

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISPACS.2007.4445961

Filename

4445961