A Minimum-Complexity High-Performance Channel Estimator for MIMO-OFDM Communications

Author

Liu, Tingting ; Wang, Mao ; Liang, Yan ; Shu, Feng ; Wang, Jianxin ; Sheng, Weixin ; Chen, Qian

Author_Institution

Wireless Networking & Mobile Commun. Group, Nanjing Univ. of Sci. & Technol., Nanjing, China

Volume

59

Issue

9

fYear

2010

Firstpage

4634

Lastpage

4639

Abstract

Channel estimation is critical to the performance of a multiple-input multiple-output and orthogonal frequency-division-multiplexing (MIMO-OFDM) communication system. Current MIMO-OFDM channel estimation techniques suffer from either high complexity or poor performance. In fact, this issue has become one of the bottlenecks of a practical MIMO-OFDM system. This paper solves the problem by introducing a new technique that has minimum complexity and yet provides superior channel tracking performance close to a minimum mean square error (MMSE) estimate over a wide range of channel selectivity and noise variance. The performance was evaluated via numerical simulations.

Keywords

MIMO communication; OFDM modulation; channel estimation; mean square error methods; MIMO-OFDM; MMSE; channel estimation; channel estimator; channel selectivity; channel tracking; minimum complexity; minimum mean square error; multiple-input multiple-output and orthogonal frequency-division-multiplexing; noise variance; Channel estimation; Interference; MIMO; OFDM; Signal to noise ratio; Channel estimation; multiple-input multiple-output and orthogonal frequency-division multiplexing (MIMO-OFDM);

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2010.2081694

Filename

5587906