| 摘要 |
A method for detecting in-band interfering signals, in a wireless communication base station, the method comprising: performing downconversion and bandpass-filtering of a received analog signal to produce a downconverted bandpass-filtered analog signal which resides approximately within a predetermined reverse-link frequency band; performing automatic gain control (204) of said downconverted bandpass-filtered analog signal to produce a first gain-controlled signal whose RMS amplitude is approximately equal to a predetermined value; performing analog-to-digital conversion (208) of said first gain-controlled signal to create a stream of digital samples; performing analysis (212) of said stream of digital samples to create a first set of sub-band power measurements corresponding to the received power associated with adjacent frequency sub-bands, each sub-band representing a fraction of a predetermined spectrum analysis band, said spectrum analysis band including frequency components outside of said reverse-link frequency band; and performing spectrum evaluation (216), comprising: identifying a group of one or more adjacent sub-band power measurements which exceed a predetermined threshold; and identifying any group of one or more sub-band power measurements which is inside the reverse-link frequency band, and are less than a predetermined minimum or threshold. <IMAGE> |
