OFDM receiver

A receiver comprising:

• 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;
• and
• provide the allocated-frequency-sub-bands and the unallocated-frequency-sub-bands to the frequency-offset-correction-block;
• wherein 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 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.

A method for producing a frequency-corrected-signal for an OFDM-receiver comprising the steps of:

• receiving, by way of a sub-band-demapping-block, an input-signal and determining within the input signal by way of the sub-band-demapping-block:
• one or more allocated-frequency-sub-bands allocated to convey an information-signal;
• and
• one or more unallocated-frequency-sub-bands;
• receiving, by way of a frequency-offset-correction-block, a frequency-offset-estimation-signal representative of a frequency-offset-error of the input-signal relative to a local oscillator of the OFDM-receiver;
• applying, by way of the frequency-offset-correction-block, 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 the frequency-corrected-signal.