Patent ID: 8718158

Claim:
In a multicarrier modulation system including a first transceiver in communication with a second transceiver using a transmission signal having a plurality of carrier signals for modulating a plurality of data bits, each carrier signal having a phase characteristic associated with at least one bit of the plurality of data bits, a method for scrambling the phase characteristics of the carrier signals comprising: transmitting the plurality of data bits from the first transceiver to the second transceiver; associating a carrier signal with a value determined independently of any bit of the plurality of data bits carried by the carrier signal, the value associated with the carrier signal determined by a pseudo-random number generator; determining a phase shift for the carrier signal at least based on the value associated with the carrier signal; modulating at least one bit of the plurality of data bits on the carrier signal; modulating the at least one bit on a second carrier signal of the plurality of carrier signals.