Patent ID: 9106497
Filing Date: 2015-08-11
Classification: H04L

Abstract:
1. A method for reducing the effect of one or more interferer signals in an orthogonal frequency division multiplexing (OFDM) system comprising: calculating, by a processor of a communication device, a first fast Fourier transform (FFT) of an incoming signal; estimating a frequency of said one or more interferer signals in the incoming signal using the first FFT of the incoming signal; estimating an amplitude of said one or more interferer signals in the incoming signal using the first FFT of the incoming signal; estimating a phase of said one or more interferer signals in the incoming signal using the first FFT of the incoming signal; generating, by a generator of the device, an interferer-correction signal based on the frequency, amplitude, and phase of the one or more interferer signals; and using the interferer-correction signal to reduce the effect of the one or more interferer signals, wherein using the interferer-correction signal comprises: subtracting the interferer-correction signal from the incoming signal to create a resulting signal; performing a second FFT on the resulting signal after subtraction of the interferer-correction signal; and forwarding the signal from the second FFT for subsequent OFDM processing.