Manelli Denison & Selter PLLC
Coarse frequency estimation in an OFDM receiver based on autocorrelation of accumulated samples
An OFDM receiver has an autocorrelation circuit configured for generating an autocorrelation result from samples of received short preamble symbols in a received data packet, where the autocorrelation circuit generates each autocorrelation result based on accumulation of the samples having been received for the short preamble symbols. Hence, by using all received samples of the short preamble symbols, the autocorrelation based on accumulated samples minimizes the effect of noise and provides a more accurate coarse frequency estimation result.
Advanced Micro Devices, Inc.
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Yong Xu Chien-Meen
Li Zhou Hwang