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Channel Estimation Using Virtual Pilot Signal for MIMO-OFDM Systems

MIMO-OFDM 시스템을 위한 가상 기준 신호를 이용한 채널 추정 기법

Seo, Heejin;Park, Sunho;Kim, Jinhong;Shim, Byonghyo
서희진;박선호;김진홍;심병효

  • Received : 2015.10.02
  • Accepted : 2015.12.11
  • Published : 2016.01.31

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

References

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Acknowledgement

Grant : 주파수 센싱 기반의 스펙트럼 관리 및 미래전파통신 플랫폼 연구

Supported by : 정보통신기술연구진흥센터, 한국연구재단