Title :
Joint carrier frequency offset and channel estimation in OFDM Systems
Author :
Freda, M.M. ; Weng, J.F. ; Le-Ngoc, T.
Author_Institution :
Dept. of ECE, McGill Univ., Montreal, Que., Canada
Abstract :
A joint carrier frequency offset (CFO) and channel estimation technique is presented for burst mode OFDM systems. It employs the non-linear recursive least squares (NL-RLS) algorithm working in time domain and in decision directed mode. When compared with other techniques, this approach functions without the aid of pilot tones in the OFDM data symbols, maintains a reasonable complexity, and provides a superior performance, which is shown to be insensitive to decision errors even at low SNR.
Keywords :
OFDM modulation; channel estimation; frequency estimation; least squares approximations; nonlinear estimation; time-domain analysis; OFDM Systems; carrier frequency offset estimation; channel estimation; decision directed mode; nonlinear recursive least squares; time domain; Channel estimation; Doppler shift; Fading; Frequency estimation; Iterative algorithms; Least squares methods; OFDM; Oscillators; System performance; Time domain analysis;
Conference_Titel :
Wireless Networks, Communications and Mobile Computing, 2005 International Conference on
Print_ISBN :
0-7803-9305-8
DOI :
10.1109/WIRLES.2005.1549564
