Invention Grant
US08355468B2 Carrier frequency estimation method and apparatus in wireless communication system 有权
无线通信系统中的载波频率估计方法及装置

Carrier frequency estimation method and apparatus in wireless communication system
Abstract:
A carrier frequency estimation method and apparatus is provided for improving frequency estimation performance in an Orthogonal Frequency Division Multiplexing (OFDM) communication system. The frequency estimation method for a wireless communication system includes summing correlations of four pairs of reference symbols transmitted at different frequency-time resource blocks in a pattern, each pair including two closest reference symbols; calculating a statistical value (E) by accumulating the summed correlation in a frequency direction; and estimating a frequency offset using an angle extracted from the statistical value (E).
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