Identification of CDMA signal and GSM signal using the wavelet transform

Author

Liu, Haiqin ; Ho, K.C.

Author_Institution

Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA

Volume

2

fYear

1999

fDate

1999

Firstpage

678

Abstract

Modulation identification has found wide applications in modern communication systems. This paper proposes a method to identify the OQPSK modulation type of IS-95 CDMA signal and the GMSK modulation type of GSM signal. The two signals have different transient properties because of their different modulation schemes. The idea of the proposed method is to use wavelet transform to extract the transient behaviors of the two signals, and then perform a template matching in the wavelet transform domain for identification. Simulation results showed that the percentage of correct identification was 98% at -3 dB E_b/N ₀ with an observation period of 0.5 ms

Keywords

cellular radio; code division multiple access; identification; minimum shift keying; quadrature phase shift keying; wavelet transforms; CDMA signal; GMSK; GSM signal; IS-95; OQPSK; communication system; modulation identification; template matching; transient properties; wavelet transform; Baseband; Filters; GSM; Multiaccess communication; Optical signal processing; Phase shift keying; Pulse shaping methods; Signal processing; Wavelet domain; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. 42nd Midwest Symposium on

Conference_Location

Las Cruces, NM

Print_ISBN

0-7803-5491-5

Type

conf

DOI

10.1109/MWSCAS.1999.867728

Filename

867728