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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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INDUCTANCE
DXP sch. lib for INDUCTANCE
- 2010-09-21 01:19:49下载
- 积分：1
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Doubly_Fed_Induction_Generator_driven_by_a_Wind_T
Doubly-Fed Induction Generator
driven by a Wind Turbine
Stator disconnected from grid
- 2010-09-22 07:13:30下载
- 积分：1
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MKBCD
社会计算，mkbcd算法，准确划分出每个社团(Social computing, mkbcd algorithm，Accurately divided each community)
- 2013-08-03 20:00:51下载
- 积分：1
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1
说明： 实指数序列a=1/2 实指数序列a=1/2(Real exponential sequence a = 1/2)
- 2011-12-05 19:06:01下载
- 积分：1
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DMC-improve
基于matlab的dmc算法改进，m文件编写，计算更加简略，有助于新手学习。(Based on the improved algorithm matlab dmc, m document preparation.)
- 2014-03-27 14:32:06下载
- 积分：1
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Textureclassifiers
Texture classifier using wavelet and ANN
- 2011-01-20 21:25:59下载
- 积分：1
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ejiesobi
基于二阶统计量的SOBI算法，适用于盲源分离(SOBI algorithm based on second-order statistics for blind source separation)
- 2013-04-22 16:32:31下载
- 积分：1
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cluster_jl
这是论文Fast_unfolding_of_communities_in_large_networks的MATLAB代码，是一种静态社区发现算法(This is the thesis Fast_unfolding_of_communities_in_large_networks MATLAB code, is a static community discovery algorithm)
- 2015-03-22 16:03:43下载
- 积分：1
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chrip_test
雷达发射线性调频信号，载频10GHz，线性调频信号带宽10MHz，脉宽5us，采样率自设，两目标距离雷达5000米和5020米
（1）模拟两个目标的回波，并进行脉冲压缩（匹配滤波），验证脉冲压缩对改善雷达距离分辨力的作用
（2）调整两个目标的间距从1米到20米，观察结果得出结论。(Radar transmitting chirp signal, carrier frequency 10GHz, chirp signal bandwidth of 10MHz, pulse 5us, sample rate set up, two goals the radar 5000 meters and 5020 meters (1) Analog two goals echo, and pulse compression ( matched filtering), verify pulse compression radar range resolution on improving the role of (2) to adjust the distance between two goals 1 meter to 20 meters, observations concluded.)
- 2021-04-15 20:28:54下载
- 积分：1
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