Patent ID: 8019029
Filing Date: 2011-09-13
Classification: H04L

Abstract:
1. An apparatus for receiving an orthogonal frequency division multiplexing (OFDM) signal, the apparatus comprising: a Fourier transform processor configured to receive the OFDM signal and to generate a transformed output; a monitor and control circuit configured to detect when one or more subcarriers of the OFDM signal is obstructed by interference, and to generate a control signal based on such identification; an interferer removal circuit configured to receive the transformed output and to attenuate one or more subcarriers of the transformed output when activated by the control signal from the monitor and control circuit to generate a modified transformed output; and an equalizer configured to generate weights for decoding of a forward error correction code, wherein the equalizer is configured to receive the modified transformed output from the interferer removal circuit; wherein the interferer removal circuit is disposed in a signal path between the Fourier transform processor and the equalizer; wherein the interferer removal circuit is configured to cause the weights corresponding to the one or more obstructed subcarriers to be modified such that the weights are decreased when interference is detected.