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Description: 一个频谱转换显示程序，可直接从声卡中采样-show a spectrum conversion procedures, which directly from the sound card Sampling
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Size: 13312 |
Author: 陈明刚 |
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Description: 为解决直接序列扩频系统的数字收发机中初始频率的捕获问题，提出了一种通过DFT变换，在频域
上进行抛物插值运算的频偏估计的算法。该算法可适应低信噪比、宽频率偏移范围的恶劣通信环境和突发的通信
模式，且算法复杂度较低。该算法已在FPGA 中实现。-To address the direct sequence spread spectrum system, the number of transceivers in the initial frequency of the capture problem, a transformation through the DFT, in the frequency domain for parabolic interpolation computing frequency offset estimation algorithms. The algorithm can be adapted to low signal to noise ratio, broadband rates offset the scope of bad communications environment and unexpected modes of communication, and the algorithm complexity low. The algorithm has been realized in the FPGA.
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Size: 63488 |
Author: 赵平 |
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Description: 一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN(加性高斯白噪声信道)信道(AWGN信道：不考虑通信信道信号时，由宽频范围描述的统计随机无线噪声。)。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-A four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, channel for AWGN (additive white Gaussian noise channel) channel (AWGN channel: do not consider communication channel signals, described by the scope of broadband wireless random statistical noise.). At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results.
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Size: 9216 |
Author: jehuty |
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Description: 给定一个音频范围内的模拟强噪声随机信号（强噪声+周期信号），将信号从强噪声中提取出来，并计算原信号及提取信号的均值、平均功率、方差、频谱及功率谱密度、互相关等 并附带图形-Given within the scope of an audio simulation of strong noise random signal (noise+ periodic signal), the signal from strong noise in the extracted and calculated signals and extract the original signal of the average, average, variance, spectrum and power spectral density , such as inter-related and incidental graphics
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Size: 160768 |
Author: 欣欣向荣 |
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Description: 中国象棋排兵布阵版，玩家可以自定义敌方（黑方） 任何一个棋子的攻击力大小和攻击力变动范围，以 形成敌方的不同的排兵布阵的方式，在人机对弈中获得最大的游戏乐趣。
该版本目前还只是试用版本，在人工智能上面还有很大欠缺（敌人太傻），想必还不能满足高手在与机器对弈产生的胜利的快感，这在今后必当逐步完善，今后将会添加更加绚 丽的对战效果，支持网上对弈，也支持从网络棋牌游戏上（如QQ象棋）读取打谱信息，并自动提示下一步的走棋策略，希望 大家多提宝贵意见。 ║
║ 大家多提宝贵意见。-Chinese Chess formations Edition, players can customize the enemy (black side) of any one piece of the attacking force changes in the size and scope of attacks to form a different enemy formations in a manner that the man-machine chess get the most out of the game fun.
This version is still only a trial version of the above, there is still much lacking in artificial intelligence (the enemy is too stupid), presumably still can not meet the master of games with the machine produced by the thrill of victory, which will in the future when the gradual improvement of the future we will add the Versus a more brilliant effect, to support games on the Internet, and also supports chess games from the network (such as QQ chess) read the play spectrum of information, and automatically prompts the next step to go chess strategy, hope we make more valuable advice.
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Size: 6479872 |
Author: 哈哈 |
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Description: 对于由2根或以上的传输线组成的网络，还会有传输线间的互参数，可以理解为近端串扰系数、远端串扰系统，注意在奇模激励和偶模激励下的S参数值不同。
需要说明的是，S参数表示的是全频段的信息，由于传输线的带宽限制，一般在高频的衰减比较大，S参数的指标只要在由信号的边缘速率表示的EMI发射带宽范围内满足要求就可以了。-For by two or more transmission lines composed of a network, there will be interaction between the transmission line parameters can be interpreted as near-end crosstalk coefficient, far-end crosstalk system, attention to incentives and even mode odd mode excitation of the S parameter value is different. Must be explained, S parameter represents the full spectrum of information, due to bandwidth limitations of transmission lines are generally relatively large in the high-frequency attenuation, S parameters of the target as long as indicated by the signal edge rates of the EMI emission bandwidth to meet the requirements within the scope on it.
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Size: 3422208 |
Author: sherry |
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Description: Simulink model to verify the expected BER performance of a coherent BFSK system using the optimal threshold and proper reference frequencies for MFSK against the theoretical Pb using standard methodology. The first nulls spectral bandwidths for the BFSK signal are viewable in the spectrum scope.-Simulink model to verify the expected BER performance of a coherent BFSK system using the optimal threshold and proper reference frequencies for MFSK against the theoretical Pb using standard methodology. The first nulls spectral bandwidths for the BFSK signal are viewable in the spectrum scope.
Platform: |
Size: 9216 |
Author: Griffin Wright |
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Description: dspbuilder中用spectrum scope来查看波形的频谱，一些参数需要正确设置，一些模块需要正确添加-dspbuilder using spectrum scope to see the waveform of the spectrum, some parameters need to properly set up, a number of modules required to add the correct
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Size: 7168 |
Author: 诸叶 |
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Description: It provides an overview of DSP. It starts with a classification of the types of signals encountered in DSP. It then introduces in a heuristic way the characterization of signals in terms of frequency spectrums. The filtering process as a means of transforming or altering the spectrum of a signal is then described. The second half of the chapter provides a historical perspective of the evolution of analog and digital filters and their applications. The chapter concludes with two specific applications that illustrate the scope, diversity, and usefulness of DSP.
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Size: 9693184 |
Author: zaman |
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Description: fftcode_scope computes and displays spectrum of a signal stored in a Structure with Time
format (Format used to save signals in Simulink Scope block and in To Workspace block).
The signal must be sampled at fixed step.
PSBFFT_SCOPE performs Fourier analysis of the NB_CYCLES last cycles of signal.
The analyzed signal and a bar graph of the magnitudes of harmonic components are displayed .
Harmonic magnitudes are displayed in percent of the fundamental component defined by FREQ_FUND
and the magnitude of the fundamental value is written on the spectrum graph.
For accurate results, use a sampling time giving an integer number of samples per period.- fftcode_scope computes and displays spectrum of a signal stored in a Structure with Time
format (Format used to save signals in Simulink Scope block and in To Workspace block).
The signal must be sampled at fixed step.
PSBFFT_SCOPE performs Fourier analysis of the NB_CYCLES last cycles of signal.
The analyzed signal and a bar graph of the magnitudes of harmonic components are displayed .
Harmonic magnitudes are displayed in percent of the fundamental component defined by FREQ_FUND
and the magnitude of the fundamental value is written on the spectrum graph.
For accurate results, use a sampling time giving an integer number of samples per period.
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Size: 4096 |
Author: parata |
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Description: Watermarking is an operation of embedding infor-
mation into an image in a way that allows to identify ownership
of the image despite applying some distortions on it. In this
paper, we present a novel end-to-end solution for embedding and
recovering the watermark in the digital image using convolutional
neural networks. We propose a spreading method of the message
over the spatial domain of the image, hence reducing the local
bits per pixel capacity and significantly increasing robustness. To
obtain the model we use adversarial training, apply noiser layers
between the encoder and the decoder, and implement a precise
JPEG approximation. Moreover, we broaden the spectrum of
typically considered attacks on the watermark and we achieve
high overall robustness, most notably against JPEG compression,
Gaussian blur, subsampling or resizing. We show that an appli-
cation of some attacks could increase robustness against other
non-seen during training distortions across one group of attacks
— a proper grouping of the attacks according to their scope
allows to achieve high general robustness
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Size: 774757 |
Author: bamzi334 |
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