cognitivenetwork

这段源码给出了WINDOWS环境下在PDFLIB开发库中输出中文的几种方法（可以适合所有版本的PDFLIB库）。(This source gives the WINDOWS environment in the development of library output PDFLIB Chinese methods (which may be suitable for all versions of PDFLIB library).)

In this code we use the technique of keyword spotting to search in the spoken document

Single phase bridge rectifier simulation using matlab simulink

说明：  四旋翼无人机是一种可以被遥控也可以在无人为控制的状态下执行预定任务的飞行器，与传统直升机相比四旋翼飞行器的机械结构简单，且具有高精度，灵活精度以及较低成本的特点，被广泛用于军事侦察，农艺播撒、快递派送、摄影工作等领域。四旋翼飞行器自身具有欠驱动、多变量、非线性等特性，在外界的噪声干扰情况下，增加了四旋翼无人机的不稳定以及控制系统的设计难度。所以对四旋翼飞行器的位姿控制的研究，可以开拓科研人员对控制算法以及滤波算法的认知，具有重要的研究意义。(Four-rotor UAV is a kind of aircraft that can be controlled remotely or perform scheduled tasks without human control. Compared with traditional helicopters, the Four-rotor UAV has simple mechanical structure, high precision, flexible precision and low cost. It is widely used in military reconnaissance, agricultural broadcast, express delivery, photography and other fields. Four-rotor UAV has the characteristics of under-actuation, multi-variable and non-linearity. Under the circumstance of external noise, the instability of Four-rotor UAV and the difficulty of control system design are increased. Therefore, the research on attitude control of Four-rotor aircraft can broaden the knowledge of control algorithm and filtering algorithm for researchers, and has important research significance.)

说明：  BPSK信号在各种信道中的仿真,有高斯白噪和瑞利信道，非常有用(simulation of BPSK in every kind of channels)

将doubly stochastic matrix分解成一个排列矩阵的集合，并构造其概率分布(The doubly stochastic matrix is ​ ​ decomposed into a set of permutation matrix，at the same time，its probability distribution is constructed.)

DG placement in a 33-bus distribution power system using data envelopment analysis technique considering voltage profile, reliability, power loss and cost.

simulation ldpc channel for communication

to learn the use evolutionary algorithms in matlab

DPCM系统的简单sumlink仿真（7个量化等级，信源是正弦波）(DPCM system, a simple sumlink simulation (7 quantization levels, source is a sine wave))