调制指数
- 网络modulation index;OMI
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一种基于FPGA的调制指数可调的数字化调频方案
A Method of Digitized FM with Controllable Modulation Index Based on FPGA
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一种适合于CPM信号的盲均衡与调制指数盲估计的联合算法
Joint Algorithm for Simultaneous Blind Equalization and Modulation Index Estimation of CPM Signals
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结合仿真分析了它们的开关特性、适用的负载类型以及输出谐波随调制指数的变化情况.经对比认为连续空间矢量PWM适合于低调制指数运行;
The switch performance , matched load type and output harmonic changing with modulation index in different schemes are compared with each other .
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其特征在于采用多进制CPM技术,进制数M、调制指数h及收发天线数可以在合理范围内自由选择。
The system is characterized by multi-CPM-band technology , a number of M-ary , modulation index h and a reasonable number of antennas can be chosen easily .
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用光谱仪测量M-Z电光调制器大调制指数
Measurement of the modulation index of a M-Z electro-optical modulator using an optical spectrum analyzer
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大调制指数调相信号锁相解调器的分析与设计
Analysis and Design of Large Modulation Index PhaseModulation Signal Phase-locked Demodulator
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多调制指数连续相位调制体制&军用遥测体制的新发展
Multi-h Continuous Phase Modulation System & A New Progress for Range Telemetry
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基于贝塞尔函数的某型号卫星调频信号调制指数测量方法
Modulation Measurement by Spectrum Analyzer for the Satellite Based on the Bessel Function
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外调制器光调制指数的设计
Design of the Optical Modulation Index for External Modulator
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调制指数为整数和半整数的连续相位调制信号的盲检测
Blind Detection of Continuous Phase Modulation Signals with Integer and Half Integer Modulation Index
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因此介绍了一种在线性调频源工作时动态测量其非线性度的方法,证明了当调角信号的调制指数很小时可以用一个调幅信号作近似。
A technique for dynamically measuring the linearity of a 8 mm linear FM source is presented in this paper .
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通过在A/D转换值后补零的方法,可控制调频波的调制指数。
( Also ,) we could change the FM index by adding zero behind the result of A / D converter .
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式中,表示同相信号,表示正交信号,为调制指数,为副载波频率。
In the formula of ( 2 ), represents the in-phase signal , represents the orthogonal signal , is the modulation index and is the subcarrier frequency .
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一定的传输距离和发射光功率情况下,不同的子载波数存在一个最佳的光调制指数,使得系统载噪比最大;
Under a certain deliver distance and the light power , the different sub-carries number to exist a best optical modulation index , making the system 's carrier-to-noise ratio biggest .
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仿真结果表明,通过实施波长控制技术和增加光调制指数等措施,可以有效提高系统载噪比。
The analytic results on system CNR ( Carrier-Noise-Rate ) and the computer simulation show that the system CNR can be improved greatly by utilizing the wavelength controlling and increasing the optical modulation index .
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在通信原理中,关于角度调制中调制指数β和带宽W与调制信号参数的关系是一个重要的问题。
In the communication principle , the corelation modulation coefficient , bandwidth and modulation signal parameters in angle modulation is a complicated prob ~ lem .
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提出了一种未知调制侧音频率和调制指数时FFT频率引导的算法,推导出了其性能指标的计算公式,并与当前实现方式进行了比较。
The algorithm is proposed for the situation with unknown side-tone frequency and modulation parameters , which performance expression is also given out . At the same time , it is compared with the current implement forms .
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这一方法改进了传统方案中参考腔的调制方式,具有易实现、调制指数高等优点。
The new method modified the traditional modulation method in the reference cell , and has advantages including easy implementation , high modulation index , and low cost , etc.
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我们首先介绍了Turbo码的编码方式,以及采用的BCJR迭代译码方法,然后分析了关于连续相位调制CPM的调制以及常用的两种解调方法,给出了不同调制指数和不同进制数下的仿真曲线。
First we introduce the encoding and iterative decoding principles of Turbo codes , and then we present the modulation and two demodulation methods for CPM , Simulation results are provided for different modulation parameters ( including different modulation levels ) .
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部分调制参数如载波频率、符号速率在识别之前获得,在识别完成之后可以进一步估计调制指数、调制频偏、信号带宽等其余参数。
Some modulation parameters , such as the carrier frequency and the symbol rate , can be estimated prior to the recognition of modulation types . Such other parameters as the modulation index , the modulation frequency deviation , and the signal broadband can be further estimated after recognition .