Research Article
Proposal of Time Domain Channel Estimation Method for MIMO-OFDM Systems
@INPROCEEDINGS{10.1007/978-3-319-25479-1_16, author={Tanairat Mata and Pisit Boonsrimuang and Kazuo Mori and Hideo Kobayashi}, title={Proposal of Time Domain Channel Estimation Method for MIMO-OFDM Systems}, proceedings={Wireless and Satellite Systems. 7th International Conference, WiSATS 2015 Bradford, UK, July 6--7, 2015, Revised Selected Papers}, proceedings_a={WISATS}, year={2015}, month={10}, keywords={Time domain channel estimation (TD-CE) MIMO Channel impulse response Channel frequency response Non-Nyquist rate}, doi={10.1007/978-3-319-25479-1_16} }- Tanairat Mata
Pisit Boonsrimuang
Kazuo Mori
Hideo Kobayashi
Year: 2015
Proposal of Time Domain Channel Estimation Method for MIMO-OFDM Systems
WISATS
Springer
DOI: 10.1007/978-3-319-25479-1_16
Abstract
This paper proposes a time domain channel estimation (TD-CE) method for Multi Input Multi Output-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems. The feature of proposed TD-CE method is to estimate channel frequency responses for all links between transmit and receive antennas in MIMO-OFDM systems by using one scattered pilot preamble symbol in the time domain. The proposed method can achieve higher channel estimation accuracy even when the number of transmission antennas is larger and the transmission signal is sampled by a non-Nyquist rate in which the number of IFFT points is different from the number of data subcarriers due to the insertion of null subcarriers (zero padding) at the both ends of data subcarriers. This paper shows various computer simulation results in the time-varying fading channels to demonstrate the effectiveness of the proposed channel estimation method as comparing with the conventional channel estimation methods.