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Description: TDCS(变换域通信系统)与直扩通信系统性能比较的程序，对于研究TDCS的朋友很有用！-TDCS (Transform Domain Communication System) and Direct Sequence Spread Spectrum Communication System Performance Comparison of procedures for the study of useful TDCS friends!
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Size: 171008 |
Author: xiong jinshi |
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Description: 一些最新的关于变换域通信系统的英文文献，从CNKI的最新数据库中下载的，与同行们共享！-Some of the latest on the transform domain communication system in English literature, from CNKI download the latest database and shared with colleagues!
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Size: 7929856 |
Author: xiong jinshi |
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Description: 讨论相位随机性对变换域通信系统（TDCS）的影响-this source talking about the random phase in TDCS
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Size: 1024 |
Author: 李立金 |
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Description: 讨论了变换域通信系统中收发端一致时的系统性能，包括AWGN信道及单音，多音，窄带，扫频干扰-Discussed the transform domain communication system is identical to sending and receiving end system performance, including the AWGN channel and the tone, multi-tone, narrowband, swept-frequency interference
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Size: 79872 |
Author: 李立金 |
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Description: 本文利用小波以及小波包在数字信号处理中表现出来的优势，将其应用到变换域通信(TDCS)中。针对基于傅里叶变换估计方法无法对非平干扰进行有效估计的缺点，于是小波技术被应用于谱估计中。作为TDCS通信前端的频谱感知阶段所应用的数学工具，进行频谱感知，小波变换可以确定干扰所在频段以及创建小波基函数，用于数据传输。并且将其与其他变换方式的应用场合以及性能进行对比。并且针第二代小波良好的数据压缩性能，拟将其应用于TDCS中，对干扰频谱进行进一步压缩-The article utilized the advantages of wavelet and wavelet packet synthesis applying in the digital signal processing domain, and applied it into the Transform Domain Communication System (TDCS). To composite the shortcomings in Fourier Transform in non-stationary noise, wavelet transform are introduced. As a mathematical tool before transformation, wavelet transform will sensing the environment, locate the interference and create a fundamental modulation waveform（FMW）。Comparison with other kinds of transforms is made in this article as well. As the same time, the second generation wavelet has a good performance in data comprising, we could consider utilizing it into further lifting in the quality of the sensing period.
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Size: 698368 |
Author: mini |
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Description: Acam GP2 Application Note.
Ultrasonic Folwmetering with TDCS
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Size: 185344 |
Author: Kyongwoo Kim |
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Description: 变换域通信TDCS通过信道估计在变换域设计信号波形，其次没有采用载波调制，而是用一个类似噪声的基函数进行信息调制。TDCS具有很强的抗干扰能力和较高的低截获特性。-Transform Domain Communication TDCS through the channel is estimated in the transform domain signal waveform, followed by no-carrier modulation, but with a noise-like basis function information modulation. TDCS has a strong anti-interference ability and high LPI characteristics.
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Size: 5120 |
Author: 明慧 |
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Description: 时间数字转换器(TDCs)在激光测距中的应用 -Time to Digital Converter (TDCs) in the Laser Ranging
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Size: 163840 |
Author: Jasen |
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Description: 基于TDC 的流量测量 Ultrasonic Flowmetering with TDCs-TDC based traffic measurement of Ultrasonic Flowmetering with TDCs
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Size: 186368 |
Author: Jasen |
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Description: 变换域通信系统(TDCS)的发展历程,分析了其
独特的抗干扰方式,并揭示了TDCS具有极强的抗干扰能力、较高频谱利用率和低截获概率、低检测概率(LPI/LPD)特性的特点。-Transform domain communication system (TDCS) development process, analysis of its
The unique anti-jamming approach and reveals TDCS has a strong anti-jamming capability, high spectral efficiency and low probability of intercept, characterized by a low probability of detection (LPI/LPD) characteristics.
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Size: 186368 |
Author: ght |
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Description: 针对单门限变换域通信系统往往无法兼顾抗干扰和隐蔽通信的问题,提出了一种基于双门
限变换域通信系统基函数幅度谱的设计方法。 该方法首先在干扰存在情况下进行单门限系统最优
误码率门限与最差误码率门限的判断,然后通过参数灵活调整两个门限的值,将大于高门限和低于
低门限的值分别设为0和1,位于双门限之间的频谱进行倒置,得到的基函数通过对数据进行调制
实现通信。 仿真结果表明:相比于单门限变换域通信系统,通过参数调节后的双门限变换域通信系
统可以同时具有良好的抗干扰及隐蔽通信性能-For the problemthat single thresholdtransformdomaincommunicationsystem(TDCS) cannot
possess anti-jammingandcovert communicationpropertyat thesametime,amethodof designingthespec鄄
trumamplitudeof basis functionbasedondouble-thresholdis proposedintransformdomaincommunication
system. Withthe coexistence of jamming,the thresholds of optimal and worst bit error rate(BER) are
judged,thenby adjusting the two thresholds throughparameter,the spectrumamplitude above the upper
thresholdis markedas 0,belowthe lower thresholdis markedas 1,while betweenthe double thresholds,
thespectrumamplitudeis inverted,andfinallyTDCSimplements communicationbymodulatingdataonthe
basis function. Simulationresults showthat comparedwithsingle-thresholdtransformdomainsystemcom鄄
munication,the double-thresholdTDCSthroughadjusting the parameter canachieve goodperformance of
anti-jammingandcovert communicationat thesametime.
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Size: 1190912 |
Author: 田蜀 |
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Description: 采用遗传算法改进原基于神经网络的变换域通信系统接收方法，对收发两端频谱环境不一致条件下TDCS有效接收信息-The genetic algorithm is used to improve the receiving method of the transform domain communication system based on the neural network, and the TDCS can receive the information effectively under the condition that the spectrum environment is not uniform.
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Size: 19456 |
Author: 宋波 |
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Description: 仿真了在收发两端频谱环境不一致情况下变换域通信系统的误码率仿真(The BER of the transform domain communication system is simulated when the spectrum environment is not uniform)
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Size: 30720 |
Author: 音动乐容
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Description: 仿真了变换域通信系统在自适应方法和遗传算法优化神经网络方法下的误码率(The BER of the transform domain communication system is simulated by adaptive method and genetic algorithm)
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Size: 1192960 |
Author: 音动乐容
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Description: 可以生成TDCS信号波形，并画出波形的自相关性和互相关特性。(It can generate TDCS signal waveform and draw the correlation and cross-correlation characteristics of the waveform.)
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Size: 4096 |
Author: xbz111 |
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Description: 变换域通信系统通过在收发端，对环境进行频谱采样，剔除干扰频段，生成不含干扰的基本调制波形用于信息调制。(Transform domain communication system)
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Size: 4656128 |
Author: 刘测 |
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