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http://dx.doi.org/10.5515/KJKIEES.2016.27.1.27

Channel Estimation Using Virtual Pilot Signal for MIMO-OFDM Systems  

Seo, Heejin (School of Electrical and Computer Engineering and Institute of New Media and Communications, Seoul National University)
Park, Sunho (School of Electrical and Computer Engineering and Institute of New Media and Communications, Seoul National University)
Kim, Jinhong (School of Electrical and Computer Engineering and Institute of New Media and Communications, Seoul National University)
Shim, Byonghyo (School of Electrical and Computer Engineering and Institute of New Media and Communications, Seoul National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.27, no.1, 2016 , pp. 27-32 More about this Journal
Abstract
In this paper, we proposed a soft decision-directed channel estimation based on MMSE estimation for MIMO-OFDM system. While the conventional method employs only pilot signals for channel estimation, the proposed algorithm performs channel estimation using pilot and reliable data signals. We also proposed selection criterion among reliable data signal for channel estimation. From numerical simulations, we show that the proposed channel estimator achieves 1 dB performance gain over conventional channel estimators.
Keywords
Channel Estimation; Orthogonal Frequency Division Multiplexing(OFDM); Multi-Input Multi-Output(MIMO); Decision-Directed Channel Estimation; Iterative Detection and Decoding;
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