frequency selection

Research and Implementation of Real Time Frequency Selection of Differential Frequency Hopping Communication System Based on DSP

基于DSP的差分跳频通信系统实时选频技术的研究与实现

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Electromagnetic wave reflection coefficients are calculated out by separate selection variable of gap dimension, clearance, cell period and medium electricity parameter ε? μ, variation specialties are discussed, and the conclusions of frequency selection property indistinctively, wave reflection weak and frequency range extension etc are got.

通过开口尺寸、间隙、单元周期及介质电参数ε、μ的变化，计算了电磁波的反射，讨论了变化的特性，得出这种结构具有弱的频率选择性、波反射减弱和频带展宽等结论。

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The author also makes some suggestions for frequency selection of digital carrier and parameters selection of spectrum shaping filter.

对数字载波的频率及频谱成形滤波器的特性参数的选择提出了建议。

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Analysis of A/ D Card Frequency Selection Used on Hydraulic Pump testing

液压泵测试用的A/D卡选频分析

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Frequency Selection of Medium Frequency Melting and Holding Furnace and Power Calculation

中频感应熔炼炉与保温炉的电源频率选择及功率计算

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Research on transmission characteristics and frequency selection of seismic short wave communication in Liaoning

辽宁区域地震短波通信传播特性和频率选择探讨

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Technical Trend of Mobile Communication Frequency Selection in Japan

日本移动通信频率选择技术动向

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Secondly, it introduces the frequency selection, EMC ( Electromagnetic Compatibility), the basic generation theory and modulation of the third civil signal ( L5 signal), including LS ranging code, Forward Error Correction, QPSK modulation and Neuman.

其次，介绍了其信号的频段选择、电磁兼容性及其调制和产生的基本原理，包括L5测距码、卷积码、QPSK调制以及Neuman。

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This paper introduces the technical trend of mobile communication frequency selection as well as some measures of development of mobile communication frequency resource.

本文介绍日本在移动通信中频率选择的技术动向以及开发移动通信频率资源的几项措施。

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According to the maximization utility theory, first, we analyze the diversity characteristic affecting the system optimization, including frequency selection diversity, location diversity, the time diversity and queue diversity of member nodes.

本文根据最大化效益理论，首先，对影响系统目标优化的分集特性理论进行了分析，其中包括：频率选择型分集、地点分集、时间分集以及成员节点队列分集。

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The generator of adaptive FH pattern is designed. By using it and the result of the LQA, adaptive frequency selection is accomplished.

设计了自适应跳频图案发生器，利用信道质量评估结果，完成了自适应频率选择。

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