非协调通信信号自动调制识别系统研究

Research on automatic modulation recognition system for nonconforming communication signals

同频频率和杂波辐射频率干扰对传统系统精准识别影响较大,为了解决该问题,提出了非协调通信信号自动调制识别系统设计。架构总体结构框图,使用TMS320VC5510A型号芯片设计DSP数字信号处理器,并对内部连接示意图进行分析,使信号顺利传递到处理器中。设计流水线结构转换方式,避免杂波辐射频率干扰。面向DSP处理器对软件功能模块展开设计,分析信号管理模式与调制机制,实现多线程通信。判断多线程通信信号似然度,并跟踪,根据跟踪结果对信号进行识别。通过对比结果可知,该系统最高识别精准度可达到95%,具有较好识别能力。

In order to solve the problem,an automatic modulation recognition system for uncoordinated communication signals is designed to solve the problem.The overall structure block diagram,the use of TMS320VC5510A model chip to design DSP digital signal processor,and the analysis of the internal connection diagram,so that the signal is successfully transferred to the processor.The transformation mode of pipeline structure is designed to avoid clutter radiation frequency interference.The DSP processor is applied to design the software function module,and analyze the signal management mode and modulation mechanism to achieve multithreaded communication.The likelihood of multithreading communication signals is judged and tracked,and the signals are identified based on tracking results.By comparing the results,we can see that the highest recognition accuracy of the system can reach 95%,and it has good recognition ability.