突发消息驱动跳频系统的同步方案设计

Synchronization design for burst message-driven frequency system

摘要:

消息驱动跳频(MDFH)系统是一种以消息自身来决定跳频图案的跳频系统。本文对突发MDFH系统整体结构进行描述，制定引入突发消息驱动跳频系统同步方案，设计同步相关的前导序列、循环前缀，对帧同步、符号定时、载波同步方法分别进行设计，并进行相关仿真，最后对系统在多径环境和高斯环境的误码率(BER)进行仿真。结果表明，通过上述的同步过程，系统误码率有很大改善。

Abstract:

In Message-Driven Frequency Hopping(MDFH) system, part of the message stream will act as the Pseudo Noise(PN) sequence, and will be transmitted through hopping frequency control. The MDFH system is described firstly; and then a synchronization method for the receiver, which includes design of pre-sequence and Cyclic Prefix(CP), is put forward; the BER performance of the system in multipath channel and AWGN channel is simulated at last. Through frame detecting, symbol timing, frequency synchronization, the results show that the BER performance of the system has been greatly improved compared with that of the original MDFH system.