Phase interference extractor interference canceller in DS/SS code synchronization

The interference mitigation capability of a relative simple transform domain interference cancellation scheme is considered during the code synchronization step. The method is the phase interference extractor (PIE). Its performance is simulated in partial band interference. In the simulations bandlimiting, which often occurs in practice, is taken into account. It is shown that the method performs remarkable better than the matched filter synchronizer and slightly better than the notch filter in the presence of narrowband partial band interference (PBI) and like the matched filter method in the presence of wideband interference. For these reasons and since the PIE method does not require any threshold setting, it might be a good candidate as an interference canceller in future direct sequence synchronizers and detectors.