SIGNAL DECODING SYSTEMS

摘要

We describe a method of decoding a DCM (dual carrier modulation) modulated OFDM signal, the method comprising: inputting first received signal data representing modulation of a multibitdata symbol onto a first carrier of said OFDM signal using a first constellation; inputting second received signal data representing modulation of said multibitdata symbol onto a second, different carrier of said OFDM signal using a second, different constellation; determining a combined representation of said first and second received signal data, said combined representation representing a combination of a distance of a point representing a bit value of said multibit data from a constellation point in each of said different constellations; and determining a decoded value of a data bit of said multibit data using said combined representation.