Fast Frequency Hopping System Synchronization Capture Technology Research

FH(Frequency Hopping) has the advantage of anti-jamming,anti-fading,and anti-interception ,which is applied widely, in the modern electronic warfare and civilian communications area,such as family RF and Bluetooth, FH technology is always adopted to reduce interference and achieve reliable data transmission.In response to the advanced signal detection technologies, In recent years, FFH(fast frequency hopping) is widely used, but which has brought a corresponding technical bottlenecks, namely how to build fast and stable communication of both time and frequency synchronization.In this paper, a novel FFH synchronization acquisition scheme is proposed, which based on FH sequences dual pattern . This paper is divided into five chapters.Chapter one briefly introduces the FFH communication system relevant aspects,including basic principles, technological advantages,international development state.and several conventional synchronization acquisition algorithmsIn the Chapter II three novel serial synchronization acquisition algorithms are proposed,including hard decisioncorrelation algorithms, energy correlation algorithms, likelihood correlation algorithm. Corresponding acquisition performance is analyzed theoretically in the AWGN channel, interference channel and fading channels .In the Chapter III ,two novel parallel synchronization acquisition algorithms are proposed,including hard decisioncorrelation algorithms, energy correlation algorithms,. Corresponding acquisition performance is analyzed theoretically in the AWGN channel, interference channel and fading channels .In the Chapter IV,we make a horizontal and vertical comparison using several link-level simulations and obtain the following conclusions: novel algorithms which based on dual pattern hold superior performance than conventional synchronization in our discussed communication channel.In the discussion of the channel, based on double simultaneous capture of energy-related patterns likelihood algorithm and related algorithms,since the synchronization acquisition algorithm than the conventional synchronization superior performance,synchronous parallel algorithms than the synchronous serial synchronization algorithm faster.Chapter V summarizes the paper, and make a next research analysis and forecasts.