Research on Carrier Frequency Synchronization Technology in PCM/FM System

Author

Li Zibo ; Zheng Hai´Xin ; Yan Di

Author_Institution

Equip. Acad., PLA, Beijing, China

fYear

2014

fDate

26-27 July 2014

Firstpage

61

Lastpage

64

Abstract

The application of multi-symbol detection (MSD) algorithm in PCM/FM system improves demodulation performance, but also causes the system more sensitive to the carrier frequency offset deviation, which means the same deviation will lead to greater loss of performance in PCM/FM system based on MSD. Former carrier synchronization methods are no longer suitable due to its poor performance in low SNR, and MSD algorithm can´t automatically correct the carrier frequency difference between receiver and transmitter either. To improve system performance, a carrier synchronization method suited MSD is proposed, and then verify the applicability of the method through theoretical derivation and Mat lab simulation.

Keywords

demodulation; frequency modulation; pulse code modulation; signal detection; synchronisation; Matlab simulation; PCM-FM system; carrier frequency offset deviation; carrier frequency synchronization; demodulation performance; multisymbol detection; Demodulation; Frequency modulation; Frequency synchronization; Phase change materials; Synchronization; System performance; Telemetry; MSD; PCM/FM; frequency offset; likelihood; synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Applications and Communications (SCAC), 2014 IEEE Symposium on

Conference_Location

Weihai

Type

conf

DOI

10.1109/SCAC.2014.20

Filename

6913168