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setantics
亦思验证码C++调用封装库,支持网络图片,本地图片,内存图片的识别,在官方的dll实例中只有VB,delp,易语言的例子,()
- 2018-05-01 08:16:57下载
- 积分：1
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WIMAX_OFDM
wimax ofdm concept...hence ofdm can be implemented with mimo
- 2011-12-19 15:04:31下载
- 积分：1
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LDPC
该程序给出了LDPC编译码程序的经典算法，即BP算法，性能比较好(The program gives the classic algorithm LDPC decoding procedures, namely BP algorithm, the performance is better)
- 2013-06-13 15:42:39下载
- 积分：1
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time_frequency
这是一篇现代通信原理课程的作业报告.题目为几种时频分析方法比较及应用.详细介绍了短时傅里叶变换、小波变换、魏格纳—威利分布和Cohen类时频分布这4种典型时频分析方法,并作了比较(This is a modern communication Principle operating report. Entitled Comparison of several time-frequency analysis and 应用. 详细 Jieshao the short time Fourier transform, wavelet transform, Wigner- Willie distribution and frequency distribution of Cohen Lei This four kinds of typical time-frequency analysis method, and compared)
- 2010-07-12 22:12:25下载
- 积分：1
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wuxiandianli
无线电力传送，无线充电 ，无线传输论文，共振原理抓住电磁波。(Wireless power transmission, wireless charging, wireless transmission papers to seize the resonance theory of electromagnetic waves.)
- 2011-10-29 11:46:33下载
- 积分：1
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UWB仿真算法
说明： 实现UWB仿真，用于实现自动追踪定位，即卡尔曼滤波算法(Implement UWB simulation for automatic tracking and positioning, namely Kalman filter algorithm)
- 2020-04-22 16:31:23下载
- 积分：1
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OFDM
说明： 用simulink实现的一个完整的OFDM系统框图(A complete OFDM system block diagram implemented with simulink)
- 2019-11-07 22:07:34下载
- 积分：1
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fdyanjiu
研究考虑多普勒频移fd情况的LFM调频目标回波特性(Study considers the case of Doppler shift fd target echo characteristics LFM FM)
- 2013-07-05 16:45:09下载
- 积分：1
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IIR
使用matlab实现设计IIR滤波器：冲激不变法、双线性变换法
设计一个巴特沃思低通滤波器，其技术指标为：3dB带宽为，阻带截止频率为，阻带衰减大于30dB，采样间隔T=10us。
1）用冲激响应不变法
2）用双线性变换法设计
3）用FIR的矩形窗函数设计
二、用双线性变换法分别设计低通、高通、带通、带阻四种滤波器。模拟滤波器带原型分别为切比雪夫滤波器和椭圆滤波器，采样率Fs=20kHz，指标如下：
1）低通：通带0～4 kHz，阻带5 kHz，通带衰减Rp=0.5dB，阻带衰减As=10dB。
2）高通：阻带0～4 kHz，通带5 kHz，通带衰减Rp=0.5dB，阻带衰减As=10dB。
3）带通：通带2kHz～4 kHz，阻带0～1.5 kHz，4.5kHz以上，通带衰减Rp=0.5dB，阻带衰减As=10dB。
4）带阻：阻带2kHz～4 kHz，通带0～1.5 kHz，4.5kHz以上，通带衰减Rp=0.5dB，阻带衰减As=10dB。(Using MATLAB to implement the design of IIR filters: impulse invariant and bilinear transformation)
- 2018-01-06 15:19:26下载
- 积分：1
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A-Novel-Variable-Step-Size-NLMS-Algorithm-and-Its
By building the generalized Sigmoid function relationship between normalized step-size and the power of error signal,
a novel variable step-size NLMS algorithm is proposed. It is proved that the step-size of NPVSS-NLMS changes as
the new algorithm does when A=σv
-m and B=2. The physical meanings of the parameters in this algorithm are
explored. The theoretical analysis illustrate that this algorithm combine the virtues of NPVSS-NLMS and Sigmoid
function, and it leads to faster convergence rate and lower final misalignment. The computer simulation results
support the theoretical analysis.
- 2013-07-06 22:59:51下载
- 积分：1
