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Compensation of sampling frequency offset and local oscillator frequency offset in a OFDM receiver
Compensation of sampling frequency offset and local oscillator frequency offset in a OFDM receiver
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机译:OFDM接收机中采样频率偏移和本机振荡器频率偏移的补偿
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摘要
A partial Fourier Transform is performed, preferably using Goertzel's algorithm, to calculate two frequency bins. A phase variation is calculated for each bin, the phase variation preferably representing the phase difference between the bin calculated by a Fourier Transform performed on samples in a guard interval and the bin calculated by a Fourier Transform performed on matching samples within the useful part of the symbol. The sampling frequency offset is compensated by taking the difference between the phase variations. IMAGE
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