CAJ | 학술논문

提出了一种利用CC2530对声音信号进行压缩感知的方法。根据声音信号在频域的稀疏特性，结合压缩感知相关理论，在硬件平台上完成了模拟信号的随机稀疏采样；对采集信号的处理过程做了合理优化，进一步降低了传感器节点的通信及计算需求。利用正交匹配追踪算法对原始信号进行重构，取得了较好的重构效果。实验结果表明，在CC2530的硬件条件下，用这种压缩感知的方法能够将传统的采样频率降低至1/5。
제출료일충이용CC2530대성음신호진행압축감지적방법。근거성음신호재빈역적희소특성，결합압축감지상관이론，재경건평태상완성료모의신호적수궤희소채양；대채집신호적처리과정주료합리우화，진일보강저료전감기절점적통신급계산수구。이용정교필배추종산법대원시신호진행중구，취득료교호적중구효과。실험결과표명，재CC2530적경건조건하，용저충압축감지적방법능구장전통적채양빈솔강저지1/5。
A method for acoustic signal compressed sensing based on CC2530 was introduced.On the basis of the sparse charac-ter,combining the compressed sensing theory,the stochastic sparse sampling was accomplished on hardware platform.Besides, a proper optimization for signal processing was made.Accordingly,this method lessened sensor node’s communication and calcu-lation requirements.Using orthogonal matching pursuit (OMP)algorithm to reconstruct original signal,a good reconstruction result was acquired.Experimental results showed that,under the hardware condition of CC2530,the method according to CS could reduce the conventional sampling frequency by 80%.