摘要
针对无线地下传输信道复杂且硬件滤波效果不理想的状况,设计了适合无线地下信道的FIR(Finite Impulse Response)滤波算法,提出了一种改进OOK(On-Off Keying)解调算法,该算法使用希尔伯特变化代替传统用半波或全波整流器提取信号包络,通过MATLAB仿真验证算法的可行性,并在TMS320C6748上实现。
To solve problems such as complicated wireless underground transmission channel and unsatisfactory hardware filtering effect,the paper designs the FIR filtering algorithm that is suitable for wireless underground signal,and presents an improved OOK demodulation algorithm,which replaces the traditional semi-wave or full-wave rectifier with Hilbert transforming algorithm to extract signal envelope. The algorithm is verified feasible through MATLAB emulation,and realized on TMS320 C6748.
出处
《西安航空学院学报》
2018年第1期51-55,共5页
Journal of Xi’an Aeronautical Institute
基金
西安航空学院校级科研项目(2015KY1208)
关键词
无线地下传感器网络
磁感应技术
希尔伯特
算法分析
wireless underground sensor network
magnetic induction technology
Hilbert
algorithm analysis
