Locally optimal detection for weak spread spectrum signal in the presence of powerful narrowband M-ary ask interference

Abstract

This paper provides a new spread spectrum signal detection in the presence of digital narrowband interference using nonlinear detectors by utilizing several moments in a frequency band. The proposed procedure amounts to a nonlinear processing on the received data and matched filtering. The performance assessments indicate that this receiver is able to suppress the effect of narrowband interference, which is assumed as an Mary amplitude shift keying (ASK) signal. The new detector uses the information available in a bit duration of the spread spectrum signal and requires no training data. © 2007 IEEE.