Title :
A research on the non-coherent demodulation method of the underwater 2FSK signal
Author :
Zhigang, Huang ; Shen, Zhao ; Jian, Chen ; Chunjie, Qiao
Author_Institution :
Mechatron. & Autom. Sch., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
This paper presents a non-coherent demodulation method of 2FSK signal based on instantaneous frequency, which uses two median filters to smooth the instantaneous frequency sequences. And this method is proved useful to realize code synchronization. When the code rate is 1kbps, the ber is about 10-5.
Keywords :
frequency shift keying; median filters; modulation coding; underwater acoustic communication; code synchronization; instantaneous frequency sequences; median filters; non-coherent demodulation; underwater 2FSK signal; underwater acoustic channels; Band pass filters; Demodulation; Digital signal processing; Frequency shift keying; Signal processing algorithms; Time frequency analysis; 2FSK; instantaneous frequency; non-coherent demodulation; underwater acoustic channel;
Conference_Titel :
Electronic Measurement & Instruments (ICEMI), 2011 10th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8158-3
DOI :
10.1109/ICEMI.2011.6037884
