BIT-LOADING IN MULTI-CARRIER COMMUNICATIONS IN PRESENCE OF RADIO-FREQUENCY INTEFERERS

摘要

An apparatus and method of compensation for radio frequency interference (RFI) if present in a tone in a multiple tone system to derive an equivalent noise power that can be used in bit-loading to achieve a better bit rate. In a multi-carrier communication system the radio frequency interference (RFI) is a non-Gaussian noise which can be overlapped to the normal Gaussian noise. A transmitter is provided to measure both the total power level of the noise, and the power of the RFI noise, in order to estimate noise σ2eq of the Gaussian σ2 noise. The equivalent noise σ2eq is used to determine an equivalent SNR to be used in a standard bit-loading algorithm.