• All-digital modulation is a hot field in modern communication systems.

    全数字调制技术是当前通信领域研究的一个热点问题。

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  • Identification of digital modulation schemes plays an important role in signal analysis.

    数字调制方式的识别对于通信信号分析有着重要的作用。

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  • The minimum (frequency) shift keying (MSK) is a digital modulation with good performance.

    最小频移键控(MSK)是一种性能较优的数字调制。

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  • A kind of all-digital modulation module for power-line communication systems is described.

    介绍了一种全数字方案的电力线载波通信调制模块。

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  • The digital modulation applied in the front of HDTV needs good band efficiency and power efficiency.

    在数字电视前端采用的数字调制方式需要具有良好的带宽效率和功率效率。

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  • This paper proposed a digital modulation signal identification method using the HHT and SVM methods.

    提出了一种基于HHT和支持向量机的实际数字调制信号识别算法。

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  • A novel method is proposed for digital modulation classification based on Markov chain Monte Carlo (MCMC).

    提出了一种基于马尔可夫链蒙特卡罗(MCMC)的数字调制分类方法。

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  • QPSK as an advanced digital modulation technique is fit for the digital satellite communication system well.

    QPSK作为一种先进的数字调制方式,特别适用于数字卫星通信系统。

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  • A classification method based on Support Vector Machine (SVM) is given in the digital modulation signal classification.

    给出了一种基于支持向量机的数字调制信号分类器设计方法。

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  • Threshold and training parameters are not needed with this method, but can recognize higher-order digital modulation types.

    该方法无需设置判决门限,也无需进行参数训练,且可以识别大于四阶的数字调制类型。

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  • The results show that digital modulation is with high resolution, total digitalization programmable, and low phase noise etc.

    结果表明,数字调制具有分辨率高、全数字化可编程、相位噪声低等特点。

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  • Digital television transmission system based on the OFDM consists of Error correction processing and digital modulation parts etc.

    基于OFDM的数字电视传输系统由纠错处理和数字调制等组成。

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  • This papers proposes a test and recognition method of genetic BP neural network on common digital modulation modes in RFID standard.

    本文对RFID标准中常用的数字调制方式提出了一种基于遗传BP神经网络的测试识别方法。

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  • The noise performance in binary digital modulation system is analysed in the presence of gaussian hybrid additive white bimodal noise.

    本文以一类高斯型混合非高斯噪声双模噪声为背景噪声,详细分析了二进制数字调制系统的抗噪声性能。

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  • This pager introduces simply the interrelation between analog modulation signal and digital modulation signal on HFC networks recently.

    简要叙述现阶段HFC网络中模拟调制信号与数字调制信号的相互影响。

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  • The moisture sensor makes digital modulation and compensation on signal non-linearity and temperature offset by adoption of microprocessor.

    该传感器还借助微处理器对测量信号的非线性与温度漂移进行了数字化的修正和补偿。

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  • Finally, the plan of implementing DQPSK digital modulation signal regeneration through adopting DSP chip is discussed and diagrams are given.

    最后讨论了采用DSP芯片实现DQPS K数字调制信号再生处理的方案,给出了框图。

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  • The paper chiefly introduces the principle of all-digital modulation in IF. The key issue of how to design a all-digital modulator is emphasized.

    介绍中频全数字调制技术的原理,重点讨论设计全数字调制器的关键问题。

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  • This paper discusses the technique of waveform coding for digital modulation and presents the idea of waveform coding based on biorthogonal wavelets.

    讨论了数字调制技术中的波形成形问题,提出利用双正交子波实现波形成形的思想。

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  • A new digital modulation recognition method based on instantaneous information is proposed for the application under the low signal-to-noise ratio (SNR).

    针对数字调制识别在低信噪比下的应用,提出一种新的基于瞬时信息的调制识别算法。

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  • The algorithm is verified by experiments and the modulator can produce digital modulation signals with good EVM(Error Vector Magnitude) and spectrum mask.

    通过验证,所产生的调制信号具有良好的误差向量幅度(EVM)和频谱特征。

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  • A twice modulation is designed:, CVSD was adopted to realize conversion between analog and digital voice signals, 2DPSK was used as the digital modulation mode.

    设计出了二次调制系统:采用连续可变斜率增量调制(CV SD)实现模拟话音信号与数字编码的转换,采用二进制相对相移键控(2DPSK)作为数字调制方式。

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  • The full digital modulation system has high reliability and stability. The practice indicates that the economic and social benefits are gained after reconstruction.

    实践表明,全数字调节系统可靠性高、稳定性好,改造后的经济效益和社会效益都有所提高。

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  • The transmitter path includes a digital modulation circuit receiving multiple channel binary data, and for each channel generating a digital representation of the data.

    发射机路径包括接收多通道二进制数据,并且为每个通道生成数据的数字表示的数字调制电路。

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  • Automatic identification of the digital modulation type of a signal has found applications in many areas, including electronic warfare, surveillance and threat analysis.

    的数字信号调制类型的自动识别已应用在许多领域,包括电子战,监视和威胁分析。

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  • Aiming at the spectrum spread problem of traditional digital modulation signals, a time-phase modulation (TPM) method with abrupt phase change characteristic is proposed.

    针对传统数字调制信号频谱扩展问题,提出具有相位突变特性的时相调制(TPM)方式。

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  • This paper takes modulation technique as main hint, summarizes the essential principle of analogue modulation technology, optical modulation and digital modulation technology.

    以调制技术为主线,介绍有线电视系统中模拟调制技术、光调制技术和数字调制技术的基本原理。

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  • The requirements for modulation techniques to digital mobile communication system are presented and the improved lineally digital modulation schemes are also briefly described.

    本文讨论了数字移动通信系统对调制技术的要求,着重分析了数字线性调制及其改进方案。

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  • A new classification algorithm based on constellation diagram is proposed to overcome the weakness of traditional algorithms by witch few digital modulation types can be recognized.

    针对现有数字调制方式识别类型有限的问题,提出一种基于星座图的分类算法。

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  • A new classification algorithm based on constellation diagram is proposed to overcome the weakness of traditional algorithms by witch few digital modulation types can be recognized.

    针对现有数字调制方式识别类型有限的问题,提出一种基于星座图的分类算法。

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