Modulation mode recognition for baseband signal transformation - subjecting intermediate signal, or couples band signal to parameter estimation

摘要

The modulation mode recognition methods has a modulated, complex base band signal, initially of unknown modulation mode, which is transformed into numerous, independent intermediate signals, forming a base for the determination of the modulation mode in an evaluation circuit. The individual intermediate signals, and/or the original complex base band signal, are subjected to parameter estimation of an autoregressive model. From the estimated parameters, and/or derived prediction errors the modulation mode is determined by intercomparison or comparison with preset threshold values. USE/ADVANTAGE - For signal transmission systems, with simple and effective layout, and high reliability.