wireless_communication

A Practical Introduction to Programming and Problem Solving Third Edition 的代碼(the source code for A Practical Introduction to Programming and Problem Solving Third Edition)

fft spectrum audio file

this programs transforms a matrix to a vector which is used after applying a hamming window with 50 overlap and totally useful for speech enhancement

说明：  滤波器函数，包括圆延迟，使用圆延迟线的FIR滤波器(circular delay，FIR filter using circular delay-line buffer)

OQPSK的matlab/simulink仿真程序(OQPSK the Matlab/Simulink simulation program)

一个用MATLAB写的卡尔曼滤波器算法。。 供新手学习(Using a Kalman filter algorithm written in MATLAB. . For novices to learn)

说明：  如果对实际工程结构作简化处理，建立其动力学模型，并确定系统的质量、刚度、阻尼参数，便可以用多种方法建立系统的动力微分方程。常用的方法有直接 法、影响系数法、拉格朗日法以及有限元法等。拉格朗日法是从能量的观点建立系统的动能T、势能U和功W之间的标量关系，是研究静、动力学问题的一种方法。如果在选定运动坐标以后，能够设法求得坐标相对应的质量矩阵和刚度矩阵，就可以用影响系数法建立多自由度系统运动微分方程[4]。本文采用拉格朗日法建立了1/4车辆几何模型。(If the actual engineering structure is simplified, its dynamic model is established, and the mass, stiffness and damping parameters of the system are determined, the dynamic differential equation of the system can be established by various methods. The commonly used methods are direct method, influence coefficient method, Lagrange method and finite element method. Lagrange method is a method to study the static and dynamic problems, which is to establish the scalar relation among kinetic energy t, potential energy u and work W from the point of view of energy. If the mass matrix and stiffness matrix corresponding to the coordinates can be obtained after the motion coordinates are selected, the differential equation of motion of the multi degree of freedom system can be established by the influence coefficient method [4]. In this paper, 1 / 4 vehicle geometry model is established by Lagrange method.)

自己编写的粒子滤波的源码,用于故障诊断,是MATLAB语言写的,(their preparation of the particle filter source for fault diagnosis, is written in MATLAB.)

本论文的工作是对近场圆形阵列宽带信号进行处理，获得目标/焦点位置增益输出， 预先定义宽带信号阻带的旁瓣衰减大小以及感兴趣频域内的恒定波束宽带模式。本文使 用不同的方法解决这个设计问题，该问题分为两部分，第一部分解决频域内的模型设计， 第二部分给出时域内的结果。仿真结果表明解决方法的有效性。 (This thesis work is a circular array of broadband near-field signal is processed to obtain the target/focus position gain output, Pre-defined stopband sidelobe wideband signal attenuation constant beam size and frequency domain of interest wideband mode. This paper makes To solve this problem in different ways design, the problem is divided into two parts, the first part of the solution in the frequency domain model design, The second part gives the result in the time domain. The simulation results show the effectiveness of the solution.)

说明：  matlab 数字信号处理 FFT的频谱信号分析Matlab示例程序(The MATLAB signal spectrum analysis)