Co-Sharing Waveform Design for Millimeter-Wave Radar Communication Systems

Millimeter-wave(mmWave)radar communication has emerged as an important technique for future wireless systems.However,the interference between the radar signal and communication data is the main issue that should be considered for the joint radar communication system.In this paper,a co-sharing waveform(CSW)is proposed to achieve communication and radar sensing simultaneously.To eliminate the co-interference between the communication and sensing signal,signal splitting and processing methods for communication data demodulation and radar signal processing are given respectively.Simulation results show that the bit error rate(BER)of CSW is close to that of the pure communication waveform.Moreover,the proposed CSW can achieve better performance than the existing waveforms in terms of range and velocity estimation.

一种用于语音信号降噪的IIR滤波器

使用MATLAB中相关功能的函数,完成对采集的语音信号进行时频变换、加噪处理以及滤波器的设计。同时在此基础上分析研究了原信号、加噪信号和滤波后信号的时域波形和频谱的关系,该改动对IIR滤波器的发展有一定帮助。

THE INFLUENCE OF THE PROMOTOR Co ATOMS ON THE ELECTRONIC STRUCTURE OF THE HIGHLY EDGED PLANE OF MoS2 CRYSTAL

To elucidate the promotion action of cobalt on Mo sulfide catalysts, UV-Photoelectron Spectroscopy(UPS), X-ray Photoelectron Spectroscopy (XPS) and Lou Energy Diffraction(LEED) have been applied to study the submonolayer deposited process of metal Co on the highly edged surfaces of MoS2 crystal. The results show that the electronic effect near EF rather than the chemical changes on the surfaces, might be primary influence.

基于Cortex-M3的智能门禁考勤系统设计

设计一套Cortex-M3的智能门禁考勤系统,该系统可以实现门禁系统与指纹考勤系统的结合,通过将采集信息上传至物联网云平台,实现对门禁的远程监控及控制。