Recognition of OFDM Modulation Method

Abstract

This contribution deals with asynchronous noncoherent recognition of modulation types. The main aim is to recognize OFDM modulation method from some other single-carrier analog and digital modulation types in the presence of AWGN noise. The described solution of recognizer uses key features of the received signal. The signal amplitude is observed at the output of the quadrature intermediate-frequency stage. The properties of the recognizer are verified by simulations using Matlab.

Keywords

• Noncoherent asynchronous recognition
• OFDM modulation method
• AWGN noise
• quadrature intermediate-frequency signal
• signal key feature
• correct recognition
• false alarm
• simulation