Phase-noise compensated digital communication receiver and method therefor

DETAILED DESCRIPTION Accordingly, it is an advantage of the present invention that an improved phase-noise compensated digital communication receiver and method are provided.
Another advantage is that the influence of phase noise is mitigated somewhat independently of the loop bandwidth characteristic of a carrier tracking loop.
Another advantage is that a digital communication receiver which can operate at higher modulation orders, such as four or more bits per unit interval, also tolerates a significant amount of phase noise.
The above and other advantages of the present invention are carried out in one form by a phase-noise-compensated receiver for digital communication which includes a carrier tracking loop, a delay element, and a phase rotator.
The carrier tracking loop receives a down-converted digital communication signal and has a phase integrator which generates a phase-conveying signal.
The delay element has an input coupled to the carrier tracking loop and has an output.
The phase rotator resides outside the carrier tracking loop.
It has a first input coupled to the delay element output, a second input coupled to the phase integrator and an output that provides a signal from which digital communication data are extracted.