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Hopping synchronization scheme based on the ARM design and software implementation

Author: GuYingFei
Tutor: FengRui
School: Fudan University
Course: Computer technology
Keywords: Frequency hopping synchronization TOD TDMA
CLC: TN914.41
Type: Master's thesis
Year: 2011
Downloads: 21
Quote: 0
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Abstract


Is getting more and more bad along with the correspondence domain electromagnetic environment, the unimpeded and secure voice communication becomes more and more difficult. The applications of fixed frequency communication receive the very big limit. In order to safeguard receives and dispatches the intercommunication the reliability and the usability, the frequency-hopping communications way arises at the historic moment. In the early time of frequency-hopping technology, the frequency-hopping communications system mainly applies in the military correspondence domain, because the frequency-hopping communications system realizes complex, and the cost is high. After many years development, the frequency-hopping communications technology already widely applied in the civil correspondence domain.The synchronization is the most important problem in the FH communication system. The performance and stability of frequency-hopping synchronization relate entire frequency-hopping system’s usability directly. Decided that one kind of frequency-hopping synchronous mode fit and unfit quality the factor has many kinds, mainly includes rapidity, stability, anti-jamming and so on.The current commonly used frequency-hopping synchronous mode includes:Reference clock method, independent channel method, self-synchronizing method, synchronized prefix method. This article carries on the analysis and the research to these synchronous modes, based on this proposed that one kind the frequency-hopping synchronization method which uses the synchronized prefix and TOD (Time Of Day) the information unifies. In this frequency-hopping synchronization method’s foundation, proposes one TDMA network method.The basis proposed the frequency-hopping synchronization and the network plan, design ARM+FPGA the hardware to realize the platform. Selects the STR710FZ2 processor to take the frequency-hopping module control CPU, realizes this frequency-hopping synchronization and the network plan.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication systems ( transmission system) > Frequency hopping spread spectrum communication system > Frequency hopping communication
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