1. A receiver for receiving a signal that is representative of a plurality of sub-carriers modulated in dependence on transmit data, the receiver being arranged to determine a plurality of candidate vectors in dependence on the received signal, each of the candidate vectors being indicative of a modulation applied to a respective one of the sub-carriers, the receiver being further arranged to: determine that the received signal incorporates a predetermined level of interference in respect of one or more of the sub-carriers and adjust one or more of the candidate vectors in dependence on that determination; and determine the transmit data in dependence on the one or more adjusted candidate vectors; the receiver being arranged to adjust the one or more candidate vectors so as to reduce an influence that the candidate vectors indicative of the one or more sub-carriers would otherwise have had on the determination of the transmit data.