The phase shift computed for each carrier signal is combined with the phase characteristic of that carrier signal so as to scramble the phase characteristic of the carrier signals.

The phase characteristic of the digital output signal (710) remains close to the desired symbol phase for substantial portion of the symbol period.

A system and method that scrambles the phase characteristic of a multicarrier signal are described.

The digital input signal are filtered to produce a digital output signal (710) including a phase characteristic.

One scrambling technique involves a pseudo-random permutation of the frequency location of samples of the phase characteristic of the transform.