An Efficient Channel Estimation Algorithm under Narrow-Band Jamming for OFDM Systems

Author

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

Author_Institution

Center for Inf. Technol., Yonsei Univ., Seoul

fYear

2006

fDate

23-25 Oct. 2006

Firstpage

1

Lastpage

6

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 sub-carrier 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

Keywords

OFDM modulation; channel estimation; jamming; least mean squares methods; signal detection; MSE; NBJ; OFDM system; channel estimation algorithm; least-squares estimation; mean-squared error; narrow-band jamming; orthogonal frequency division multiplexing; pilot detection algorithm; Bandwidth; Bit error rate; Channel estimation; Detection algorithms; Frequency estimation; Interference; Interpolation; Jamming; Narrowband; OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 2006. MILCOM 2006. IEEE

Conference_Location

Washington, DC

Print_ISBN

1-4244-0617-X

Electronic_ISBN

1-4244-0618-8

Type

conf

DOI

10.1109/MILCOM.2006.302003

Filename

4086726