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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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garch
A common garch model used in everywhere
- 2009-11-16 10:54:43下载
- 积分：1
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APSK-modulation-in-AWGN-channel
通过matlab仿真工具仿真分析了APSK调制方式在典型的加性高斯白噪声下的传输性能(Through simulation matlab simulation tool analyzes APSK modulation in a typical additive white Gaussian noise transmission performance)
- 2013-11-20 16:12:45下载
- 积分：1
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t
说明： contrast streching matlab code
- 2010-03-05 05:12:40下载
- 积分：1
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ELM2011[1]
说明： 极限学习机在新环境下的应用，及其快速的算法(Extreme Learning Machine for applications in the new environment)
- 2011-02-21 15:00:51下载
- 积分：1
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hxy_Ga
用遗传算法针对对为变量进行优化设计，使得目标函数达到最优解(Genetic algorithms for pairs of variables to optimize the design, the objective function to achieve the optimal solution)
- 2012-04-29 11:18:04下载
- 积分：1
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SytheticRec_MATLAB
用matlab合成地震记录，matlab代码，石油勘探，地震正演模拟(sythetic seismic record with matlab)
- 2013-11-29 13:10:25下载
- 积分：1
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handout24
英文描述特征值 的计算 定义 便于理解 为矩阵运算提供 帮助(eigenvalue)
- 2010-10-21 16:13:00下载
- 积分：1
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PTS_PAPR
使用穷举的部分传输序列方法降低OFDM的峰均比。(PTS PAPR Simulation)
- 2015-01-14 16:39:01下载
- 积分：1
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MATLAB--applications-25-Case-Studies
《MATLAB高效编程技巧与应用：25个案例分析》,很好的matlab学习资料("MATLAB efficient programming techniques and applications: 25 Case Studies" good matlab learning materials)
- 2014-04-24 20:29:40下载
- 积分：1
