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In this paper, we consider a coded cooperation diversity scheme that is suitable for L-relay channels that operate in the decode–forward mode. The proposed scheme is based on convolutional coding, where each codeword of the source node is partitioned into two frames that are transmitted in two phases.

feature selection for high dimensional data classification

matlab信号处理的电子书籍。对想学习matlab的同学比较有用(matlab signal processing electronic books. Useful to the students want to learn matlab)

一个实现对直升机进行飞行控制的程序，包括俯仰控制、滚转控制等。(A realization on the helicopter flight control procedures, including pitch control, roll control.)

simulink 实现atsc的发送和接收。发送为mepg2包。能够计算发送速率和比较BER。(simulink achieve atsc sending and receiving. Send to mepg2 package. Transmission rate can be calculated and compare BER.)

现需要在高度为600~700KM范围内，回归周期为30天的太阳同步轨道上布置一颗L波段的合成孔径雷达卫星。 1. 请设计合适的轨道参数，并仿真对应轨道下一个运行周期内星下点轨迹图（纬度和经度两个图）； 2. 计算多普勒中心频率，多普勒调频率与纬度的关系图（设姿态角为0°，天线视角20°~60°，推荐35°）； 3. 按高斯投影方式，将星下点轨迹图投影到地图坐标上。(Now requires a height of 600 ~ 700KM range, return period of 30 days are arranged on a sun-synchronous orbit L-band Synthetic Aperture Radar satellites. 1 Please design the appropriate orbital parameters and simulate the corresponding orbit within the next operating cycle nadir trajectories (latitude and longitude two graphs) 2. Calculate the Doppler center frequency, Doppler frequency and the relationship between latitude Figure (set attitude angle is 0, the antenna angle of 20 to 60, recommended 35) 3 Press Gauss projection, the nadir trajectories projected onto the map coordinates.)

传统随机共振系统，移频随机共振系统，移频-变尺度随机共振系统，柔性随机共振系统(Traditional stochastic resonance systems, stochastic resonance frequency shift, frequency shift- variable scale stochastic resonance systems, a flexible system of stochastic resonance)

说明：  用MatlaB编程实现GMSK在移动通信系统中的调制解调(Programming with MatlaB GMSK mobile communication system in the modulation and demodulation)

测量6205深沟球轴承的故障振动加速度信号, 对信号进行时频分析, 利用经验模态分解方法将振动信号分解成不同特征时间尺度的固有模态函数,对每个固有模态函数进行Hilbert 变换得到Hilbert 谱,通过谱分析识别轴承的故障部位和类型, 证实Hilbert 谱的有效性(Measuring 6205 deep groove ball bearing fault vibration acceleration signal, the signal frequency analysis, empirical mode decomposition method to decompose the vibration signal into different characteristic time scales of intrinsic mode functions, the Hilbert transform of each intrinsic mode functions Hilbert spectrum, spectral analysis to identify the location and type of bearing failure, confirmed the effectiveness of the Hilbert spectrum)

MATLAB FILE TELL HOW TO REPRESENT RGB IN MATLAB