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awgn
DTMF(双音多频)是用两个特定的单音频组合信号来代表数字信号的一种编码技术。两个单音的频率不同，代表的数字或实现的功能也不同。可采用8种频率代表电话机上的16个按键，10个数字键0~9和6个功能键*、#、A、B、C、D。具体的频率组合见参考书。要求：
(1) 根据键盘输入的符号，利用MATLAB产生对应的DTMF信号；(2) 分别利用FFT算法和Goertzel算法计算该DTMF信号的频谱并画出频谱图；(3) 根据频谱图确定DTMF信号所代表的符号是否和输入的符号一致。
(DTMF (Dual Tone Multi-Frequency) is a single with two specific combination of audio signals to represent a kind of digital signal coding techniques. Two monosyllabic different frequency, on behalf of the numbers, or the realization of the functions are also different. Eight kinds of frequency of use on behalf of telephone on the 16 keys, 10 numeric keys 0 ~ 9 and 6 function keys*,#, A, B, C, D. The frequency of specific composition of reference books. Requirements: (1) According to the keyboard input of symbols, the use of MATLAB have a corresponding DTMF signal (2), respectively, using FFT algorithm and the Goertzel algorithm DTMF signal spectrum and frequency spectrum draw (3) According to DTMF signal frequency spectrum to determine represented by symbols and input symbols unanimously.)
- 2008-12-24 20:12:16下载
- 积分：1
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uwb
UWB时域波形描述与仿真，满足FCC组织规定的室内UWB系统(UWB time-domain waveform description and simulation, to meet the FCC requirements for indoor UWB systems organization)
- 2010-06-16 08:58:21下载
- 积分：1
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MATLAB-power-disign
电力系统设计与分析
matlab使用
希望对大家有帮助，尤其对初学者(Electrical system design
Matlab is used
)
- 2011-12-15 21:01:04下载
- 积分：1
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Chap_5_Pred
《自适应滤波器》第五章Chap_5_Pred源代码，很详细(" Adaptive Filter" Chapter V Chap_5_Pred source code, very detailed)
- 2013-12-28 15:49:17下载
- 积分：1
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split_step_fourier_method
分布傅里叶算法，可以用于多种计算，比如光孤子的特性分析(split_step_fourier_method.m)
- 2020-08-12 11:58:28下载
- 积分：1
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matlab
说明： bp神经网络的模型训练与测试，并判断模型的可靠性。(Bp neural network model training and testing, and judge the reliability of the model.)
- 2020-09-22 14:49:47下载
- 积分：1
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NETworld
复杂网络的一篇综述，相信对学习这方面的人会有所帮助的(In this paper ，first，we use polar coordinates transformation for high-dimensional nonlinear Schrö dinger equation , then use separation of variables and homogeneous balance method ,we get spiral wave solution of this Schrö dinger equation and analyze the desired exact solution through the image.)
- 2009-12-11 10:43:15下载
- 积分：1
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DSP4
1．研究窗函数的影响。
2．研究频率的物理分辨率和计算分辨率的区别。
(1. Study the impact of window function. 2. Study of the frequency resolution and computational resolution of the physical difference.)
- 2010-03-11 21:44:33下载
- 积分：1
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buck-boost
buk-boost电路的MATLAB仿真。非常适合学习。。。。(the circuit of buk_boost)
- 2015-04-03 09:45:21下载
- 积分：1
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Mat
对MATLAB的MAT文件进行读书，用C++语言实现(read and write mat files, using C++ Language)
- 2009-07-14 16:36:16下载
- 积分：1
