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Based on dynamic dual-frequency hopping synchronization of distributed adaptive frequency hopping communication system and its simulation study

Author: CaoHua
Tutor: ShengLiYuan
School: Central South University
Course: Electronic Science and Technology
Keywords: Hopping Dynamic dual-frequency hopping synchronization Adaptive Frequency Hopping Anti-jamming Distributed network Stability
CLC: TN914.41
Type: Master's thesis
Year: 2010
Downloads: 124
Quote: 1
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Abstract


Dynamic dual-frequency hopping synchronization the (Dynamic Double Freqency Hopping Synchronization, DDFHS) is a distributed adaptive frequency hopping communication system developed specifically for frequency hopping synchronization program , with high confidentiality , high noise immunity , high stability and ease of scalable and easy to implement . This article is designed using Matlab / simulink simulation platform based on multiple frequency hopping radio DDFHS distributed adaptive frequency hopping communication simulation system , called frequency - hopping communication system ( Double Freqency Hopping Communication System , DFHCS ) . According to a distributed adaptive frequency hopping communication system characteristics and the basic requirements , combined DDFHS technical points , and to develop an agreement to avoid interference based the synchronization control agreement DDFHS and adaptive , synchronous control unit design distributed adaptive frequency hopping radio and self- adaptation avoidance scrambling unit , also designed the various other functional modules of the frequency hopping communication system , and finally , these function modules to form a complete composed by multiple radio DFHCS . The simulation system uses parallel demodulator structure to achieve real - time synchronization of multi- radio signal receiver channel assessment ; synchronous control unit according to the the parallel demodulator receiving state control net carrier transceiver timing ; adaptive unit based on the results of the real-time assessment of the channel to avoid interference of jump frequency pattern for real-time updates . Broadband blocking interference band interference and multi-frequency continuous wave interference three main disturbances manners , test synchronization DFHCS performance and bit error rate . The simulation results show that the process is simple : DFHCS technically achievable synchronization establish rapid , stable , good security , to ensure seamless transmission of the signal at the same time , depending on the interference environment automatically avoid interference and anti-interference ability , comply with the requirements of the modern military communication systems .

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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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