Joint weighted least squares estimation of frequency and timing offset for OFDM systems over fading channels
Resource
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Journal
The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003
Date Issued
2003-04
Date
2003-04
Author(s)
DOI
1090-3038
Abstract
This paper presents an algorithm for joint estimation of carrier frequency offset and timing frequency offset in orthogonal frequency division multiplexing (OFDM) systems. A weighted least squares algorithm based on a pilot-aided scheme is proposed. The algorithm operates near the Cramer-Rao bound in the variance of estimation errors. Simulations of several estimation algorithms in a multipath fading channel show that this algorithm provides the most accurate estimation in both the carrier frequency offset and the timing frequency offset.
Type
conference paper
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