Patent ID: 7660344

Claim:
In a communication system including at least one digital modem, a method of processing a quadrature amplitude modulation (QAM) signal, the method comprising: coarse tuning a received QAM signal using a non-decision aided gain controller at an intermediate frequency level, wherein inphase/quadrature baseband signals within the received signal having amplitudes defined by the coarse tuning; fine tuning, using an adaptive time domain equalizer (ATDE), the inphase/quadrature baseband signals by changing dynamic center tap coefficients relative to at least one side coefficient to perform inphase/quadrature amplitude correction; wherein the communication system is a point-to-multipoint communication system, wherein the communication system operates in the millimeter wavelength spectrum, wherein the communication system is a time division multiple access system for communicating data in a frame format, wherein the communication system is a time-division duplex system, and wherein fine tuning, using the ATDE, the inphase/quadrature baseband signals by changing dynamic center tap coefficients comprises filtering the dynamic center tap coefficients and limiting the filtered dynamic center tap coefficients.