Description: 用matlab仿真实现了25 kHz 带宽内同时传送总共48 kbit/s 的两路语音(每路速率9. 6
kbit/s) 和两路数据信息(速率分别为19. 2 kbit/s 和9. 6 kbit/s) , 仿真结果表明达到了较好的误码性能。并比较了4 种数字调制方式下O FDM 系统的误码性能。-using Matlab Simulation bandwidth of 25 kHz simultaneous transmission within a total of 48 kbit / s 2 Road Voice (rate of 9 per road. 6 kbit / s) and two road data information (rate of 19. 2 kbit / s and 9. 6 kbit / s), the simulation results indicate achieve a better BER. And comparison of four types of digital modulation mode O FDM system BER. Platform: |
Size: 27107 |
Author:林志宏 |
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Description: 改进平方根法求解对称正定线性方程组，用matlab编写，可以在一定程度上提高求解效率。其中MRoot_squaring.m为原做法，sparse_cmp.m为二维等带宽存储，Moot_zonal.m为二维等带宽存储的平方根法求解-To improve the square root method to solve symmetric positive definite system of linear equations using matlab to prepare, to a certain extent improve the efficiency of solving. MRoot_squaring.m which the original approach, sparse_cmp.m for the two-dimensional, such as memory bandwidth, Moot_zonal.m for the two-dimensional, such as the square root of bandwidth storage method Platform: |
Size: 1024 |
Author:周星星 |
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Description: 使用MATLAB编程软件，编程实现在给定的话务模型下计算各个接口的消息总流量和带宽的用户界面；
使用MATLAB编程软件，编程实现在给定话务模型下各个接口之间的信令链路及所需要的中继端口数的用户界面；
-Using MATLAB programming software, programming to achieve a given traffic model calculated all the news of the total interface bandwidth traffic and user interface using MATLAB programming software, programming to achieve in a given traffic model between the various interfaces signaling link and the need to relay port number of the user interface Platform: |
Size: 13312 |
Author:liuhui |
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Description: 地震资料处理中带通滤波MATLAB源码程序。能根据需要选择滤波带宽。-Seismic data processing in the band-pass filtering MATLAB source code program. Need to select the bandwidth according to filtering. Platform: |
Size: 1024 |
Author:jcm |
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Description: 根据雷达信号的时宽带宽乘积为常量, 不能兼顾作用距离和距离分辨率的原理, 使含有噪声的Chirp
信号经过匹配滤波器加以检测, 并对其进行了MATLAB 仿真。-According to radar signal bandwidth product of the time constant and can not take into account the role of the principle of distance and range resolution, so that noisy Chirp signal to be detected through the matched filter, and its conduct of the MATLAB simulation. Platform: |
Size: 605184 |
Author:gms |
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Description: 基于多相结构的信道化发射机实信号输出matlab仿真程序:从仿真得到的图可以看到，输出8路实信号所需的带宽为输出8路复信号所需带宽的一半。另外，输出的复信号频谱结构不再像直接法实现时所得到的顺序对应结构，其原因还有待进一步研究。-Channel based on multi-phase structure of real signal of the transmitter output matlab simulation program: graph obtained from the simulation can be seen, the output 8-channel bandwidth needed for real signals, the output 8-channel half the bandwidth required for complex signals. In addition, the output structure of the complex signal spectrum is no longer realized as the direct method corresponds to the order obtained by the structure, the reason remains to be further studied. Platform: |
Size: 1024 |
Author:anchor |
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Description: 为了匹配信道特性达到较佳的传输效果，应选用适当码型，以便在最小传输带宽的条件下大大减小或消除这种干扰。选用了MATLAB软件进行了仿真，设计实现了一些简单的常用码型-In order to match the channel transmission characteristics to achieve better results, should use the appropriate code type, so that under the conditions of minimum transmission bandwidth substantially reduce or eliminate such interference. Use of the MATLAB simulation software, designed and implemented some simple common pattern Platform: |
Size: 104448 |
Author:nana |
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Description: MATLAB软件对不同发射天线、不同接收天线、不同信噪比下的MIMO系统容量进行仿真，得出在不增加带宽和天线发送功率的情况下利用MIMO信道成倍地提高无线信道容量-MATLAB software for different antennas, different antenna, different SNR of the MIMO system capacity for simulation, obtained without increasing the bandwidth and the antenna transmit power where the use of MIMO channels to improve wireless channel capacity multiplied Platform: |
Size: 1024 |
Author:刘月 |
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Description: White noise is a random signal (or process) with a flat power spectral density. In other words, the signal contains equal power within a fixed bandwidth at any center frequency. White noise draws its name from white light in which the power spectral density of the light is distributed over the visible band in such a way that the eye s three color receptors (cones) are rather equally stimulated, so the white Gaussian noise the values that the noise can take on are Gaussian-distributed.-This file includes matlab source and explanation report Platform: |
Size: 83968 |
Author:林虎 |
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Description: 产生一个高斯白噪声
利用MATLAB自带的fir1函数产生一个低通滤波器，限制高斯白噪声的带宽，由此产生了视频噪声。
利用产生的视频噪声，分别代入噪声调幅干扰的时域表达式，并且进行100次的积累后求平均值，对其进行快速傅里叶变换后，由此画出噪声调幅干扰的频域波形。
重复上述步骤，分别代入噪声调频干扰与噪声调相干扰的时域表达式，分别画出其频域波形与时域波形。(Generate a Gauss white noise
The fir1 function of MATLAB is used to generate a low-pass filter, which limits the bandwidth of Gauss white noise, and thus produces video noise.
Using the generated video noise, the time domain expressions of noise amplitude modulation interference are substituted, and the average value is calculated after 100 times accumulation. After fast Fourier transform, the frequency domain waveform of noise amplitude modulation interference is drawn.
Repeat the steps mentioned above, and substitute the time-domain expressions of noise FM interference and noise coherent interference, and draw the frequency-domain waveform and time-domain waveform respectively.) Platform: |
Size: 3072 |
Author:大丶哥 |
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Description: 生成一个线性调频信号起始频率20mhz到60mhz'带宽为40mhz'的lfm
并进行短时傅里叶变换(Generate a LFM with a starting frequency of 20 MHz to 60 mhz'bandwidth of 40 mhz' for LFM signal
Short-time Fourier transform is performed.) Platform: |
Size: 2048 |
Author:hz297 |
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Description: 仿真伪相位编码连续波雷达的信号处理。设码频为 5MHz，伪码周期内码长为511，雷达载频为 10GHz，输入噪声为高斯白噪声，视频输入信噪比为 -15dB，相干 积累总时宽不大于0ms，给出回波视频表达式，脉压和FFT后的表达式；仿真给 出脉压和FFT 后的输出图形；通过仿真说明各级处理的增益，与各级时宽和带宽的关系；仿真说明脉压时多卜勒敏感现象和多卜勒容限及其性能损失（脉压主旁比与多卜勒的曲线）(Simulation of pseudo phase coded CW radar signal processing. Suppose the code frequency is 5MHz, the code length in the pseudo code period is 511, the radar carrier frequency is 10GHz, the input noise is Gaussian white noise, the video input signal-to-noise ratio is - 15dB, the total coherent accumulation time width is not more than 0ms, the echo video expression, the expression after pulse pressure and FFT are given; the pulse pressure and FFT are given by simulation After that, the output graph; the relationship between the gain of each level of processing and the time width and bandwidth of each level through simulation; the phenomenon of Doppler sensitivity, Doppler tolerance and its performance loss during pulse compression (the curve of the ratio of main to side of pulse pressure and Doppler)) Platform: |
Size: 862208 |
Author:fvck123 |
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Description: 卫星链路计算的matlab程序，很好用，考虑到了信号的编码调制方式，信号带宽，天线增益，空间损耗等等，比较全面的星地链路计算程序。(The matlab program of satellite link calculation is very easy to use. Considering the signal coding and modulation mode, signal bandwidth, antenna gain, space loss and so on, it is a comprehensive satellite ground link calculation program.) Platform: |
Size: 3072 |
Author:jamesbraidy |
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Description: 于正交频分复用(OFDM)存在由带外辐射过高、峰均比(PAPR)过大等缺点，面向第5代移动通信(5G)的第3代合作伙伴计划(3GPP)的新无线空口(NR)标准，各大通信厂商都提出了包括滤波正交频分复用(Filtered-OFDM)、加窗OFDM、滤波器组OFDM(FB-OFDM)等新波形技术。考虑到5G更高的通信速率及带宽需求,并需适用于6 GHz以，上的高频通信(尤其是毫米波频段) ,5G候选波形需要更高的时频效率和更优的带外辐射特性,以满足5G通信的要求"。(Due to the shortcomings of orthogonal frequency division multiplexing (OFDM), such as excessive out of band radiation and high peak to average ratio (PAPR), new wireless air interface (NR) standard for 3G Partner Program (3GPP) of 5g mobile communication has been proposed by major communication manufacturers, including filtered OFDM, windowed OFDM, filter bank OFDM, etc. Considering the higher communication rate and bandwidth requirements of 5g, and being suitable for high frequency communication (especially millimeter wave band) above 6 GHz, 5g candidate waveform needs higher time-frequency efficiency and better out of band radiation characteristics to meet the requirements of 5g communication.) Platform: |
Size: 632832 |
Author:4dsa5 |
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