Patent ID: 8165189

Claim:
A method for generating a precoded signal transmitted from a transmitter to a receiver in a system, the method comprising: generating a first source signal representing information to be transmitted from the transmitter to the receiver; generating a second source signal representing information to be transmitted from the transmitter to the receiver; modulating the first source signal according to a first modulation structure used by the transmitter to generate a first modulated source signal; modulating the second source signal according to a second modulation structure used by the transmitter to generate a second modulated source signal; transmitting the first and second modulated source signal; receiving the first and second modulated source signal at the receiver; determining the second modulation structure of a second modulated source signal at the receiver; wherein the second modulated source signal being interference to the first modulated source signal; determining a constellation for decoding the received first modulated source signal at the receiver, the determined constellation being based on the second modulation structure; determining a mapping rule for mapping the second modulated source signal based on the determined constellation; and precoding the first modulated source signal according to the mapping rule prior to transmitting the first modulated source signal.