greed

认知无线电是一种用于提高无线电通信频谱利用率的新的智能技术. 首先简述认知无线电的背景和概念,针 对认知无线电的频谱感知功能,详细地分析基于能量检测的频谱检测方法,在此基础上研究了噪声方差的不确定 性对检测性能的影响. 针对无线信号检测具有本地局域性和能量检测存在信噪比极限的特点,提出一种分布式有 限合作检测机制,推导出基于“OR”规则的有限合作机制的检测概率,并进行Monte Carlo仿真.(Cognitive radio is a radio communications spectrum used to improve the efficiency of the new smart technology. First, the background and outlined the concept of cognitive radio, spectrum sensing for cognitive radio capabilities, a detailed analysis of the spectrum based on energy detection test In this study the noise variance based on the uncertainty of the detection performance. for wireless signal detection with local detection of localized and there is signal to noise ratio limit of the energy characteristics of a distributed cooperative detection mechanism, derived out based on " OR" rules of the detection probability of the limited cooperation mechanism and conduct Monte Carlo simulation.)

基于matlab的MPSK调制方式simulink仿真系统，系统中有录音模块、PCM编码、误码率计算等模块。(MPSK modulation mode based on the matlab simulink simulation system, the system of recording module, PCM coding, bit error rate calculation module, etc.)

说明：  一些MATLAB的学习资料，我个人觉得还挺有用，希望能对大家有所帮助！(Some MATLAB-learning materials, I personally think that' s kinda useful, hope you can help!)

NMO校正的一个MATLAB小程序，希望对大家有帮助。( A program for NMO correction..)

matlba语言编写，可以实现多个excel文件的合并。(matlba language, can be combined to achieve multiple excel files.)

说明：  是自适应滤波的一个源代码，用matlab编写，可以直接复制进行运行(Adaptive filtering is a source code, matlab written copy can be run)

经典应用例子，可以供大家学习参考使用，其中大部分是验证过的(Classic application examples)

Abstract— We propose a simple speech compression algorithm using subband division and ADPCM (Adaptive Differential Pulse Code Modulation) algorithm. Although speech data are stored in a semiconductor memory device, its capacity and the available network capacity are limited. Therefore, it is necessary to compress the data as much as possible. The first is that the reconstructed datum must be understood correctly. Speech signal is compressed with a ratio of 1/4 using the proposed subband division and ADPCM (Adaptive Differential Pulse Code Modulation) algorithm.

仿真Alamouti 2发2收空时编码性能，调制方式为QPSK(Simulation for Alamouti 2 rounds of 2 to close space-time coding performance, the modulation method is QPSK)

MTi-G 微机械陀螺仪自带matlab源码(MTi-G the micromachined gyroscopes comes matlab source)