Title :
Performance Analysis of a Channel Estimator using Linear Interpolation for OFDM Systems
Author :
Doukas, Athanasios ; Kalivas, Grigorios
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Patras, Achaia
fDate :
Oct. 29 2006-Nov. 1 2006
Abstract :
In this work, the performance of a pilot symbol assisted channel estimator using linear interpolation for practical orthogonal frequency division multiplexing (OFDM) systems is examined. A novel analysis of the mean square error (MSE) is given for an OFDM system in which data subcarriers are also positioned before the first and after the last pilot subcarrier and their number is different at the two edges. The performance of the estimator, in both MSE and bit error rate (BER) terms, is characterized by the number and distance of the inserted pilots and the Doppler spread. Simulations show the influence of these factors on MSE and BER performance.
Keywords :
OFDM modulation; channel estimation; error statistics; interpolation; mean square error methods; BER; MSE; OFDM systems; bit error rate; channel estimator performance analysis; linear interpolation; mean square error method; orthogonal frequency division multiplexing systems; pilot symbol; Bit error rate; Channel estimation; Delay; Frequency estimation; Interpolation; Mean square error methods; OFDM; Performance analysis; Polynomials; Wireless communication; BER; Linear Interpolation; MSE; OFDM;
Conference_Titel :
Signals, Systems and Computers, 2006. ACSSC '06. Fortieth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
1-4244-0784-2
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2006.355069
