By Topic

A Channel Estimation Method Based on Sample-Shift of Time-Domain Signal for OFDM Systems

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Mingqi Li ; Shanghai Res. Center for Wireless Commun. ; Lin Tang ; Xiaodong Zhang ; Honglin Hu
more authors

A channel estimation method based on sample-shift of time-domain signal is proposed for OFDM systems. Through artificial cyclic sample-shift of time-domain signal, the equivalent coherent bandwidth of OFDM systems can be broadened. Hence, the channel estimation errors, caused by the simple linear interpolation in frequency-domain, can be reduced due to the increase of correlation between neighboring pilot sub-carriers. The theoretical analysis and simulation results show that equivalent channel coherent bandwidth can be broadened effectively and the channel estimation performance can be improved by sample-shift significantly, especially over high SNR range. When the value of cyclic sample-shift is given as the sampling-interval normalized RMS of channel, the near optimal performance can be achieved.

Published in:

Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th

Date of Conference:

22-25 April 2007