Patent ID: 8681889

Claim:
A receiver comprising: circuitry comprising a decoding circuit and being operable in at least two modes, wherein: while said circuitry operates in a first of said modes, said decoding circuit processes OFDM symbols received on a first number of data-carrying subcarriers to recover a number of mapped symbols per OFDM symbol that is greater than said first number; and while said circuitry operates in a second of said modes, said decoding circuit processes OFDM symbols received on a second number of data-carrying subcarriers to recover a number of mapped symbols per OFDM symbol that is equal to or less than said second number; said circuitry receives OFDM symbols via a channel having significant nonlinearity such that: while said circuitry operates in said first of said modes, said nonlinearity degrades a performance metric by less than 1 dB, relative to a perfectly linear channel; and while said circuitry operates in said second of said modes, said nonlinearity degrades said performance metric by 1 dB or more, relative to a perfectly linear channel.