A system for use with an OFDM-receiver, the system comprising: a frequency-offset-estimation-block; a frequency-offset-correction-block; and a sub-band-demapping-block 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; provide the allocated-frequency-sub-bands and the unallocated-frequency-sub-bands to the frequency-offset-correction-block; and provide the allocated-frequency-sub-bands to the frequency-offset-estimation-block; wherein the frequency-offset-estimation-block is configured to: determine a frequency-offset-estimation-signal based on only the one or more allocated-frequency-sub-bands, wherein frequency-offset-estimation-signal is representative of a frequency-offset-error of the input-signal relative to a local oscillator of the OFDM-receiver; wherein the frequency-offset-correction-block is configured to: receive the frequency-offset-estimation-signal; 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. a frequency-offset-estimation-block; a frequency-offset-correction-block; and a sub-band-demapping-block 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; provide the allocated-frequency-sub-bands and the unallocated-frequency-sub-bands to the frequency-offset-correction-block; and provide the allocated-frequency-sub-bands to the frequency-offset-estimation-block; 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; one or more allocated-frequency-sub-bands allocated to convey an information-signal; and one or more unallocated-frequency-sub-bands; provide the allocated-frequency-sub-bands and the unallocated-frequency-sub-bands to the frequency-offset-correction-block; and provide the allocated-frequency-sub-bands to the frequency-offset-estimation-block; wherein the frequency-offset-estimation-block is configured to: determine a frequency-offset-estimation-signal based on only the one or more allocated-frequency-sub-bands, wherein frequency-offset-estimation-signal is representative of a frequency-offset-error of the input-signal relative to a local oscillator of the OFDM-receiver; wherein the frequency-offset-correction-block is configured to: receive the frequency-offset-estimation-signal; 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. receive the frequency-offset-estimation-signal; 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.