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http://dx.doi.org/10.6109/jkiice.2015.19.10.2275

An Efficient Channel Estimation Method in MIMO-OFDM Systems  

Jeon, Hyoung-Goo (Department of Information and Communication Engineering, Dongeui University)
Kim, Jun-Sig (June Engineering and Construction)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.19, no.10, 2015 , pp. 2275-2284 More about this Journal
Abstract
In this paper, the Walsh coded orthogonal training signals for 4 × 4 multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) systems are designed and the channel estimation equations are derived as a closed form, taking account of the inter training signal interference problems caused by the multi-path delayed signals. The performances of the proposed channel estimation method are analyzed and compared with the conventional methods[9,14] by using computer simulation. The simulation results show that the proposed methods has better performances, compared with the conventional methods[9,14]. As a result, the proposed method can be used for MIMO-OFDM systems with null sub-carriers.
Keywords
MIMO-OFDM; Channel estimation; Orthogonal training signal; Time domain channel estimation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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