Synchronization in FH-MFSK spread spectrum systems

Author

Defly, Koffi ; Wang, Xiande ; Wu, Geng ; Lecours, Michel

Author_Institution

Dept. of Electr. Eng., Laval Univ., Quebec City, Que., Canada

fYear

1988

fDate

15-17 Jun 1988

Firstpage

385

Lastpage

389

Abstract

The authors consider the synchronization at the frame level as well as at the chip level, in frequency hopping spread spectrum (FH-SS) receivers in order to maximize performance and minimize mutual interference in FH-SS systems. A sliding correlator is implemented for frame synchronization, which is also known as coarse synchronization or acquisition. A method is proposed to ensure fine synchronization (tracking) in the system. The principles of this method are presented and the resulting circuit is implemented and evaluated. The advantages compared to previous methods are the resulting circuits simplicity and performance. Although this circuit is implemented for MFSK (M-ary frequency shift keying), it can be used for an M-ary PSK (phase shift keying) signal since it is based principally on an energy detector

Keywords

frequency agility; frequency shift keying; phase shift keying; radio receivers; spread spectrum communication; synchronisation; FH-MFSK spread spectrum systems; M-ary PSK; M-ary frequency shift keying; acquisition; chip level; coarse synchronization; energy detector; fine synchronization; frame level; frame synchronization; frequency hopping spread spectrum receivers; mutual interference; phase shift keying; sliding correlator; tracking; Circuits; Demodulation; Detectors; Frequency shift keying; Frequency synchronization; Frequency synthesizers; Matched filters; Mixers; Phase shift keying; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1988, IEEE 38th

Conference_Location

Philadelphia, PA

ISSN

1090-3038

Type

conf

DOI

10.1109/VETEC.1988.195389

Filename

195389