A new adaptive excision algorithm called consecutive mean excision (CME) is presented. The CME algorithm separates iteratively the initial set of samples to two sets: outlier set and desired signal set. The initial threshold parameter required by the CME algorithm is calculated in advance based on statistical properties of the noninterfered signal. The same initial threshold parameter is shown to operate in various interference scenarios regardless of interference power and bandwidth. In this study the CME algorithm is attached to the adaptive FFT notch filter. The performance of the adaptive FFT CME notch filter is shown to overcome the basic adaptive FFT notch filter using the single mean or single median approach in various interference scenarios when attached to direct sequence communications systems.
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Henttu et al. (2003) studied this question.