Title :
Pilot-Aided Channel Estimation for OFDM Systems in the Presence of Narrow-Band Interference
Author :
Zhang, Rongrong ; Dong, Xiaodai
Author_Institution :
Univ. of Victoria, Victoria
Abstract :
In this paper, we study the channel estimation for OFDM systems with comb-type pilot tones in the presence of narrow-band interference (NBI). In particular, we propose a weighted least square (WLS) method based on the maximum likelihood rule. The WLS method achieves performance close to the minimum mean square error (MMSE) channel estimation method, assuming knowledge on the channel delay spread and the power spectral density (PSD) of the noise plus interference are available.
Keywords :
OFDM modulation; channel estimation; least mean squares methods; radiofrequency interference; OFDM systems; comb-type pilot tones; minimum mean square error; narrow-band interference; noise plus interference; pilot-aided channel estimation; power spectral density; weighted least square; AWGN; Additive white noise; Channel estimation; Delay estimation; Gaussian noise; Interference; Mean square error methods; Narrowband; OFDM; Wireless LAN;
Conference_Titel :
Electrical and Computer Engineering, 2007. CCECE 2007. Canadian Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-1020-7
Electronic_ISBN :
0840-7789
DOI :
10.1109/CCECE.2007.17
