Patent ID: 7672407
Filing Date: 2010-03-02
Classification: H04B,H04L

Abstract:
1. A method for mitigating interference from periodic noise comprising: receiving wireless signal data at a radio receiver, the data including a periodic noise signal, the noise varying in frequency over time, wherein the frequency varying is periodic; performing a time spectrum characterization of the data that estimates a power spectrum of the data over frequency and time; cross-correlating using a cross-correlation circutry of the radio receiver a portion of the time spectrum characterization of the data with all or a larger portion of the time spectrum characterization to determine a period of the periodic noise signal; estimating a time domain receive channel that is affected by the periodic noise; and providing a dynamic noise weighting using a noise weighting circutry of the radio receiver the periodic noise signal, wherein the dynamic noise weighting tracks the noise signal over each transmitted symbol of the signal.