查询词典 transmission channel

The paper expands some important links of the communications system which include channel, noise, digital transmission of analog signal, channel encode and signal modulation.

本文在深刻理解通信系统理论的基础上利用MATLAB强大的仿真功能，设计了许多具体的通信系统仿真模型。

Then positively ana.lyzed transmission effect of monetary policy of China in recent years, and with relative theories, discussed rr~ore deeply the existing principal problems on transmission mechanisms of monetary policy in our state under the realistic institutional situation of economy and finance:(1)Monetary policy tools lag behind the economic and financil background;(2)Separated and uneven money markets, the lack of transaction agents and defect in the relation between money markets and c~potal markets, have rendered the transaction of monetary policy lack on effective channel;(3)over-speculating, illegal operation and insufficient competition have severely weakened the transmission fumction;(4) systematic defect of state -owned commercial bank, asymmetry between financial and economic composition have made monetary policy lose an effective carrier;(5) factors beyond the financial system, such as soft cornstraint over state - owned enterprises policy decision, imperfect social insurance system, etc.

接下来对我国近年来的货币政策传导效果进行了实证分析，在此基础上运用相关传导机制理论并结合我国实际经济、金融制度与环境论述了我国当前货币政策传导机制的主要问题：（1）货币政策工具相对于经济、金融环境显得落后；（2）货币市场的分割、不平衡、交易主体不全以及货币市场与资本市场的联系机制缺位使得货币政策缺乏一个有效的场所；（3）资本市场特别是股票市场的过渡投机、违规操作以及不充分竞争严重地削弱了证券市场的传导功能；（4）国有商业银行现行体制的缺陷，金融结构与经济结构的非对称使得货币政策传导受阻；(5)金融体系外的因素（如国企决策行为软约束、社会保障制度不健全）。

Then positively ana.lyzed transmission effect of monetary policy of China in recent years, and with relative theories, discussed rr~ore deeply the existing principal problems on transmission mechanisms of monetary policy in our state under the realistic institutional situation of economy and finance:(1)Monetary policy tools lag behind the economic and financil background;(2)Separated and uneven money markets, the lack of transaction agents and defect in the relation between money markets and c~potal markets, have rendered the transaction of monetary policy lack on effective channel;(3)over-speculating, illegal operation and insufficient competition have severely weakened the transmission fumction;(4) systematic defect of state -owned commercial bank, asymme try between financial and economic composition have made monetary policy lose an effective carrier;(5) factors beyond the financial system, such as soft cornstraint over state - owned enterprises' policy decision, imperfect social insurance system, etc.

接下来对我国近年来的货币政策传导效果进行了实证分析，在此基础上运用相关传导机制理论并结合我国实际经济、金融制度与环境论述了我国当前货币政策传导机制的主要问题：（1）货币政策工具相对于经济、金融环境显得落后；（2）货币市场的分割、不平衡、交易主体不全以及货币市场与资本市场的联系机制缺位使得货币政策缺乏一个有效的场所；（3）资本市场特别是股票市场的过渡投机、违规操作以及不充分竞争严重地削弱了证券市场的传导功能；（4）国有商业银行现行体制的缺陷，金融结构与经济结构的非对称使得货币政策传导受阻；(5)金融体系外的因素（如国企决策行为软约束、社会保障制度不健全）。

L Transmitter and receiver is used in pairs in the same channel, and it is also allowed to use in one-many way in the same channel (one transmitter sends signal, several receivers receive in the same channel; it is synchronous and accurate to receive, which is equal to wireless video distributor), or it is also allowed to use in the many-many way (one transmitter occupies 1 channel, and supports 4 channels of video and audio transmission at the very most, which causes no cross fire one another).

l 发送器和接收器在同一信道内成对使用，也可在同一信道内以一对多方式使用（一个发送器发送信号，同一信道内多个接收器接受信号，实现同步精确接收，作用与无线视频分配器等同），或以多对多的方式使用（一个发射器占据一个信道，最多同时支持4信道的音频视频传输，互相不影响）。

A system and method of information dissemination that permits the user to listen to the specific content of information when and where he or she wants to. A radio or television receiver system receives information from an FM subcarrier, a television vertical blanking interval transmission, an active picture area television transmission, a television separate audio program transmission or a dedicated radio channel and stores the transmitted information in a memory. A user interface allows selection from the memory of the stored information via a set of menus controlling a hierarchical database, so as to access particular items of the information.

一种信息传播的系统及方法，当他或她希望的时候及场合，允许用户，收听具体的信息内容，射频电视接收机系统从FM副载波、电视垂直消隐间隔发送、活动图象区电视发送、电视分离音频节目发送或专用无线电频道接收信息，并将所发送的信息存储在一个存储器中，用户接口通过一组控制分级数据库的菜单实现从存储器中对存储的信息的选择，以存取专项信息。

In digital signal transmission systems, parallel transmission is the most efficient transmission technique at present for non-ideal channel. In which, orthogonally multiplexed QAM system and discrete multitone system are two typical systems.

在数字信号传输系统中，并行传输是目前最有效的一种抗信道失真传输技术，而正交复用QAM和离散多载波是两种并行传输系统典型的实现方式。

Its ideal is that modulation mode can be adaptively adjusted by estimating such wireless parameters as fading degree,channel traffic and etc. Channel capacity will achieve a maximum and system performance will be best anytime. By this way,although mobile wireless channel broadband is more and more congesting today,adaptive modulation can be provided preferable spectral efficiency and can be increased the information transmission rate.

它的主要思想是通过研究无线信道的衰落程度、信道流量等参数动态地改变调制方式，在任何时刻都使信道容量达到最大或者使系统性能达到最佳，从而使移动无线信道频带日益拥挤的今天能得到较高的频谱利用率，有效地提高信息传输速率、从而提高传输系统的带宽。

When the digitalsignal carries on the long distance transmission, the high frequencycomponent weaken increases along with the distance increases, theelectric cable median line also advances to the betweenelectromagnetic radiation along with the frequency intensifies, thusthe clipped wave transmitting range and the transmission quality,simultaneously in the channel often also exists separates the directcurrent electric capacity and the coupling transformer, they cannottransmit the direct component and have a bigger weaken to the lowfrequency component, therefore high frequency and low frequency arepartial regarding the common channel is limited.

当数字信号进行长距离传输时，高频分量的衰减随距离的增大而增大，电缆中线对之间的电磁辐射也随着频率的增高而加剧，从而限制信号的传输距离和传输质量，同时信道中往往还存在隔直流电容和耦合变压器，他们不能传输直流分量及对低频分量有较大的衰减，因此对于一般信道高频和低频部分均是受限的。

RIEMS+ can decrease the transmission failure probability and increase the channel utility factor, because it overcomes the drawback that nodes may have different cognitions on channel status, which arises from the differences in propagation ranges of frames with varying transmission rates.

该协议解决了在不同发送速率条件下，因MAC层帧头的传输范围不同而引起邻节点对信道状态认知产生差异的问题，从而降低了分组发送失败概率和提高了信道利用率。

Consequently the beam transmission problem is solved well. The general design curves of microwave plasma drift tube are developed by the theory and they can be used for development of the plasma microwave devices. Ion channel, as a important phenomenon in the interaction between electron beam and plasma, is first introduced into the study of PASOTRON, to replace the concept'plasma channel'used in general plasma microwave devices. A model is created to describe the channel performance. The channel is not stable, it is oscillatory and the oscillation frequency is larger than that of plasma.

作为电子束与等离子体相互作用的一个重要现象，本文首次将离子通道的概念引入到了PASOTRON的研究中，以区别常规的等离子体通道概念，并通过建立的模型推出离子通道并非一稳定规则的通道，而是具有振荡特性，振荡频率高于等离子体频率，推出了当满足一定条件时束外可能没有电子而成为纯的离子通道，这种状态对微波器件有重要的价值。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了