An efficient channel estimation algorithm under narrow-band jamming for OFDM systems

  • Authors:

  • Myeongsu Han;Takki Yu;Jihyung Kim;Kyungchul Kwak;Seungyoup Han;Daesik Hong

  • Affiliations:

  • Center for Information Technology of Yonsei University and Information and Telecommunication Lab., Dept. of Electrical and Electronic Engin., Yonsei Univ., Seoul, Korea;Samsung Electronics, Suwon, Korea;Center for Information Technology of Yonsei University and Information and Telecommunication Lab., Dept. of Electrical and Electronic Engin., Yonsei Univ., Seoul, Korea;Center for Information Technology of Yonsei University and Information and Telecommunication Lab., Dept. of Electrical and Electronic Engin., Yonsei Univ., Seoul, Korea;Center for Information Technology of Yonsei University and Information and Telecommunication Lab., Dept. of Electrical and Electronic Engin., Yonsei Univ., Seoul, Korea;Center for Information Technology of Yonsei University and Information and Telecommunication Lab., Dept. of Electrical and Electronic Engin., Yonsei Univ., Seoul, Korea

  • Venue:
  • MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
  • Year:
  • 2006

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Abstract

This paper presents a channel estimation scheme using a new jammed pilot detection algorithm for Orthogonal Frequency Division Multiplexing (OFDM) systems under Narrow-Band Jamming (NBJ). The jammed pilot subcarrier can be detected and excised by using the proposed algorithm after least-squares estimation. The average Mean-Squared Error (MSE) on one OFDM symbol both under a jammed and a removed pilot subcarrier are derived analytically. Simulation results show that the channel estimator with the proposed algorithm significantly improves the MSE performance at a low signal-to-jamming ratio.