Channel loading effects on power limited wireless transmitters utilizing discrete multitone modulation

A method is presented for optimizing the throughput of a radio channel limited by intermodulation distortion induced in transmission of discrete multitone (DMT) signals. The DMT concept is presented, and the carrier-to-interference ratios as a function of the amount of channel loading are computed for different power levels. These values, obtained using 2 different methods-the NPR approach and the MMSE Gain method-are shown to be in good agreement. The degradation in C/I for a fully loaded channel with respect to the two-tone case is also computed.