Title :
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
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;
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
DOI :
10.1109/MILCOM.2006.302003
