slmpapr4

将OFDM的过程讲解得很清楚，很适合开始学习OFDM及ＭＩＭＯＯＦＤＭ　的同志们参阅(OFDM process will explain very clearly, it is appropriate to begin to learn OFDM and comrades MIMOOFDM see)

首先分析了瑞利衰落信道统计特性，并在此基础上给出了clarke模型，然后提出仿真方法，包括成形滤波法、jakes仿真模型及其多种改进方法，接着阐述了上述仿真模型的软件实现过程，并利用matlab进行了计算机仿真，然后给出衰落信号的仿真信号和分析结果，仿真结果证明了提出的仿真模型与理论曲线匹配度高，可以很好地模拟无线衰落信道(First analyze the statistical properties of the Rayleigh fading channel, and clarke model is given on this basis, and then asked the simulation methods, including the forming of the filter method, the the jakes simulation model and a variety of improvement, then described the simulation model of the software implementationprocess, and using matlab computer simulation, and then gives the simulated signals and analysis results of the fading signals, simulation results show the proposed simulation model with the theoretical curve to match high, can simulate the wireless fading channel)

Cooperative spectrum sensing and adapting to the environment, a cognitive radio is able to fill spectrum holes and serve without causing harmful interference to the licensed user. We consider optimization of cooperative spectrum sensing with energy detection to minimize the total error rate.

常用的MATLAB图像压缩编码，通过matlab实现，其中包含了DM编码、变换编码（FFT和DCT）、算术编码、行程编码、EewrHK编码、线性预测编码和一个近似的BRMGrYr编码过程。本人通过MATLAB编码效率很高。 (Commonly used MATLAB image compression coding, through matlab implementation, which includes the DM coding, transform coding (FFT and DCT), arithmetic coding, run length coding, EewrHK coding, linear predictive coding and an approximate BRMGrYr encoding process. I have a high coding efficiency by MATLAB. )

说明：  利用matlab来实现求振动振型和固有频率。(Seeking to achieve vibration and natural frequency of vibration.)

说明：  介绍了线性调频信号的概念，线性调频信号的时频特性描述及用MATLAB进行仿真(the characters of Chirp signal)

说明：  基于奇异谱的齿轮箱振动信号分析，含主程序及熵值函数。(The vibration signal analysis of Gearbox Based on singular spectrum includes main program and entropy function.)

小波分析非常好的学习资料，都是源码，希望对大家有所帮助！(Wavelet analysis is very good learning materials, all source code, want to help you!)

对块匹配中的全局搜索进行改进，只用搜索整幅图像的一半像素，与全局搜索（FS）相比，精度没有降低而时间减少了一半。(improved from full search, the matching time-consuming is nearly half of FS, but the matching accuracy is not reduced.)

matlab程序和说明文档。解决一类非线性最优求解问题，求解目标函数最小值。使用matlab中的fimincon函数，求有约束的非线性函数最小值。(matlab program to solve a class of nonlinear optimal problem solving, solving the objective function minimum. Use in matlab fimincon function, seeking a minimum of constrained nonlinear function.)