Patent ID: 10708109

Abstract:
A system for use with an OFDM-receiver. The system comprising a frequency-offset-correction-block; and a sub-band-demapping-block. The sub-band-demapping-block is configured to receive an input-signal and determine within the input signal: one or more allocated-frequency-sub-bands allocated to convey an information-signal; and one or more unallocated-frequency-sub-bands. The sub-band-demapping-block can then provide the allocated-frequency-sub-bands and the unallocated-frequency-sub-bands to the frequency-offset-correction-block. The frequency-offset-correction-block is configured to: receive a frequency-offset-estimation-signal representative of a frequency-offset-error of the input-signal relative to a local oscillator of the OFDM-receiver; and apply a frequency-correction-algorithm to the allocated-frequency-sub-bands and at least a subset of the unallocated-frequency-sub-bands, based on the frequency-offset-estimation-signal, to produce a frequency-corrected-signal which compensates for the frequency-offset-error of the input-signal.