Synchronization detection device for digital broadcast reception system uses correlation of decimated and delayed reception signal values with summation of differences and summation for detection of fast Fourier transformation window

摘要

The synchronization detection device detects the start point of a fast Fourier transformation window within a reception signal by decimation of received complex data sample values by a decimation number dependent on the transmission mode and correlation between the decimated values and delayed data values, with summation of the difference values and subsequent interpolation, for detection of the symbol timing synchronization position from the interpolated values.