By Topic

An Interpolation Based Channel Estimation Method for MIMO 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
$33 $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

4 Author(s)
Chengyu Lin ; Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai ; Feng Yang ; Wenjun Zhang ; Youyun Xu

This paper proposes a novel channel estimation method to further improve the performance of the optimal pilot sequences in multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. We first assume that the virtual pilot tones superimposed at the data locations over the specific sub-carriers are transmitted from all transmit antennas. We then obtain the virtual received pilot signals at the corresponding locations at the receive antennas by interpolation in the time domain. Finally, the channel parameters are obtained from the combination of the virtual and real received pilot signals over one OFDM symbol based on the least squares (LS) channel estimation. Simulation results show that the proposed channel estimation method provides much better performance than the previous method for the optimal pilot sequences over multiple OFDM symbols, especially in fast time- varying channels.

Published in:

Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th

Date of Conference:

21-24 Sept. 2008