| 摘要 |
A receiver controller configured to control a receiver in receipt a signal comprising a series of time-consecutive symbols, each symbol comprising an FFT window and a guard interval, said guard interval comprising a cyclic prefix or postfix, the receiver controller configured to control the receiver to acquire at least one signal parameter, the receiver controller configured to;
based on a plurality of samples of the received signal, each sample having a predetermined sample length, provide for determination of a plurality of correlation values based on pairs of the plurality of samples, said pairs of samples separated in time by a predetermined separation number of samples;
provide for determination of a first correlation block comprising a plurality of consecutive correlation values, the number of correlation values within the first correlation block based on a predetermined correlation block size,
provide for determination of a second correlation block comprising a plurality of consecutive correlation values, the number of correlation values within the second correlation block based on the predetermined correlation block size,
wherein the temporal separation between the first and the second correlation blocks is based on the predetermined correlation block size,
provide for determination, using an average of at least the first correlation block and the second correlation block, an average correlation block; and
if one or more average correlation values above a predetermined threshold are present in the average correlation block, acquire the at least one signal parameter of the signal, from the average correlation block, comprising the length of the guard interval and/or the length of the service data window and/or the timing of the symbols that form the signal. |
