Detection of speech modulated SSB and AM signals in the HF-band

Author

Kreuzberger, Jörg ; Reichert, Jürgen ; Quint, Franz

Author_Institution

SEL Verteidigungssyst. GmbH, Pforzheim, Germany

Volume

1

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

208

Abstract

The automatic detection of the modulation type of communication signals in the HF range between 2 and 30 MHz is extremely difficult due to the signal distortion caused by sky wave propagation. Under time varying and frequency selective fading it´s difficult to determine between stationary digital and nonstationary speech modulated transmissions. In this paper an algorithm is introduced to separate speech modulated single sideband (SSB) and double sideband (AM) broadcasts from all other broadcasts in the HF range. The algorithm extracts a set of features from the analyzed signal and uses a polynomial classifier to classify the signal

Keywords

HF radio propagation; fading channels; feature extraction; modulation; radio broadcasting; signal classification; signal detection; speech processing; time-varying channels; 2 to 30 MHz; HF-band; algorithm; automatic detection; communication signals; double sideband broadcasts; feature extraction; frequency selective fading; nonstationary speech modulated transmission; polynomial classifier; signal classification; signal distortion; single sideband modulation; sky wave propagation; speech modulated AM signals; speech modulated SSB signals; speech signal detection; stationary digital speech modulated transmission; time varying fading; Algorithm design and analysis; Amplitude modulation; Broadcasting; Digital modulation; Fading; Frequency shift keying; Polynomials; Receivers; Signal analysis; Speech;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference Proceedings, 1999. MILCOM 1999. IEEE

Conference_Location

Atlantic City, NJ

Print_ISBN

0-7803-5538-5

Type

conf

DOI

10.1109/MILCOM.1999.822673

Filename

822673