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OFDM_matlab
OFDM系统的整个流程，用MATLAB编写的程序(The whole process of OFDM system, using MATLAB program
)
- 2014-08-19 14:00:11下载
- 积分：1
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2analyze
判断信号质量好坏，主要用于人体生理信号的质量判断(Judgments The signal quality good or bad, mainly used for the the the quality of the judgment of of the the human body physiological signal)
- 2013-04-23 21:59:32下载
- 积分：1
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用Welch法进行功率谱估计
考虑L的三个不同值：L＝256（3个数据段），L＝128(7个数据段)和L=64（15个数据段）。各自的谱估计图如上图所示。可以明显的看到，加窗明显的减小了频谱上的假谱峰，但也更加进一步平滑了谱峰。所以，对于L＝64的情况，在ω＝0.8π的谱线可以很确定的辨认，但是那两个靠近的谱峰不容易区分。对于L＝128的情况，这种情况提供了在分离和检测间最好的均衡。当然，对于在L＝256时的情况，效果是更好的，能够从谱估计图上明显的分辨出三条谱线的存在以及它们幅度关系的强弱。 除了Welch法外，还可以采用对多个周期图求平均的功率谱估计方法的其他方法如Bartlett法等等，在功率谱估计上也能取得较好的结果。(consider three different values : L = 256 (3 data), L = 128 (7 data) and L = 64 (15 data). Their spectral estimation map as shown in Fig. It is clear to see that increase significantly decreasing window of the spectrum of false peaks, but much more to further smooth the peaks. Therefore, L = 64, in the case = 0.8 spectrum can determine the identification, but that the two peaks around is not easy to distinguish. L = 128 for the situation, which provided the separation and detection among the best balanced. Of course, L = 256 in the case, the effect is better, from the spectral estimation map clearly distinguish between the three lines of the existence and their relationship to the rate of strength. In addition to Welch law, but also can be used to map multiple cycle for the average power)
- 2005-07-12 11:18:13下载
- 积分：1
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CGP
CGP Color Planar Graph
- 2011-01-16 07:13:22下载
- 积分：1
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CHAPTER6
数字PID的matlab仿真程序，针对刘金琨的先进PID控制的matlab仿真，里面的部分程序进行了修改 第六章(Digital PID of matlab simulation program for Liu Jinkun matlab advanced PID control simulation, which part of the program were modified Chapter)
- 2011-04-22 21:17:36下载
- 积分：1
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test55
说明： 带全阶状态反馈的电机控制模拟系统。在simulink内通过二阶控制实现了良好的速度相应性能。(With full-order state-feedback simulation system of motor control. In simulink through second-order control to achieve a good performance speed accordingly.)
- 2008-10-19 03:04:47下载
- 积分：1
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arithmetic.encoding
算术编码的应用实例matlab版本
1.可以对字符进行算术编码
2.开头不必制定字符串的大小
3.编码精度高，达到小数点8位以上
4.以函数的形式给出，易于调用和移值实现
5.显示界面人机交互较出色
(arithmetic coding examples of the application of a version of Matlab. Be right characters arithmetic coding 2. Not the beginning develop the size of strings 3. Coding accuracy, reaching more than eight decimal point four. to function in the form given, easy to call and shifts to achieve 5. HCI interface shows more successful)
- 2006-12-25 22:30:25下载
- 积分：1
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state-spae
通过建立状态空间模型，使用simulink仿真，其中包括了kalman滤波(Through the establishment of the state space model, using the simulink simulation, including the kalman filter)
- 2011-06-09 18:56:13下载
- 积分：1
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signalcompress
给出了信号压缩通常的变换-量化-编码函数。DHT函数为离散DHT变换，是FFT变换的近似，其正反变换相同，克服了FFT复系数不利于存储的缺点。LLMAX函数给出了某x序列在固定比特下的最佳量化输出。熵编码函数为霍夫曼编码。(Gives the signal compression usually transform- quantitative- coding function. DHT DHT discrete transform function, the FFT transform approximation, the same positive and negative transformation, overcoming complex FFT coefficient is not conducive to storage shortcomings. LLMAX function x is given a fixed bit sequence in the optimum quantized output. Entropy coding function as Huffman coding.)
- 2013-07-27 10:40:54下载
- 积分：1
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4
说明： document of image compression
- 2014-10-19 04:49:28下载
- 积分：1
