A use of instantaneous frequency estimators for radio signals identification

Author

Lopatka, Jerzy ; Bukowski, Radoslaw

Author_Institution

Mil. Univ. of Technol., Warsaw, Poland

Volume

2

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

1139

Abstract

Identification of digitally modulated radio signals is one of the essential problems in intelligent radio links and radio monitoring systems. FSK signals are widely used for this purpose. An estimated instantaneous frequency (IF) can be used as one of the identification parameters. LPC and DESA estimators for real signals are compared to frequency estimators obtained for complex signals. Autoregressive models are proposed as a method of precise estimation of time-varying frequency in a noisy environment. A hardware solution for radio signal acquisition in complex form is also presented

Keywords

digital radio; frequency estimation; frequency shift keying; signal detection; DESA estimator; FSK signals; LPC estimator; autoregressive models; complex signals; digitally modulated radio signals; instantaneous frequency estimators; intelligent radio links; linear prediction; noisy environment; radio monitoring systems; radio signal acquisition; radio signals identification; time-varying frequency estimation; Digital modulation; Frequency estimation; Frequency shift keying; Linear predictive coding; Monitoring; RF signals; Radio link; Radiofrequency identification; Signal processing; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Africon, 1999 IEEE

Conference_Location

Cape Town

Print_ISBN

0-7803-5546-6

Type

conf

DOI

10.1109/AFRCON.1999.821937

Filename

821937