Method and apparatus for eliminating narrow band interference by means of windowing processing in spread spectrum system.

摘要

A method for eliminating narrow band interference by means of windowing a spread spectrum system, comprising the steps of: (a) extracting N sampling points of data to perform a transformation frequency spectrum every time and gain N data points; characterized by performing below, respectively, an update of control information and processing interference elimination wherein updating control information comprises the steps of: (b) for the N sampling points within a period set time, achieve energy accumulation of individual data after transform for M times and get N energy values, comparing the N energy values ​​with a threshold that is calculated from the energy values, and determining then the number of narrowband interference and the width and location of each narrow-band interference, M = 1; (C) determining the width, location and shape of the window domain adjusting the corresponding frequency, determining points included in the window and adjusted values ​​of the points based on the width and location of each narrow-band interference ; processing interference elimination comprises the steps of: (b ') for the N points of data after transformation frequency spectrum each time, based on information obtained points included in each window and the value adjusted each point during current time period and the last period, set the energy values ​​of the data at these points as the corresponding adjusted values ​​and finally performing an inverse transform frequency spectrum for these set values, emitting below the same as output.