物理层网络编码帧同步方案设计与实现  

Design and Implementation of Frame Synchronization Scheme of Physical-Layer Network Coding

作　　者：赵伟策 胡永江[1] 陈鹏[1] 

机构地区：[1]军械工程学院无人机工程系,河北石家庄050003

出　　处：《军械工程学院学报》2016年第3期52-57,共6页Journal of Ordnance Engineering College

摘　　要：为解决物理层网络编码接收信号的异步问题,首先建立了物理层网络编码双向中继通信模型,分析了信号帧异步对系统性能的影响;然后介绍了2种经典帧同步算法,在此基础上提出一种新的同步算法.根据3种算法同步性能和运算复杂度的不同,设计了适用于软件计算的帧同步方案,并在软件无线电平台上进行了实验验证.结果表明,该同步方案可准确检测信号帧的起始位置,降低了经典帧同步算法的错检概率,提高了物理层网络编码的同步性能.In order to solve the problem of asynchrony in receiving signals of physical-layer network coding,a two-way relay communication model with physical-layer network coding is established in this paper,a new synchronization algorithm is proposed by analyzing the influence of asynchronous signal frame on the system performance and introducing two classical frame synchronization algorithms. According to the analysis of synchronization performance and computational complexity of the three algorithms,a frame synchronization scheme for software calculating is designed and carried out on a software radio platform.Experimental results show that the starting position of the signal frame can be accurately detected by the synchronization scheme,the probability of failure of classical frame synchronization algorithm is reduced,and the synchronization performance of physical-layer network coding is therefore improved.

关 键 词：软件无线电 帧同步 物理层网络编码 正交频分复用 

分 类 号：TN925[电子电信—通信与信息系统]