信息传输速率

The network analysis situs system selects the main line distributional structure, uses the mature industry control network CANBUS technology, its highest correspondence speed may reach 1 Mbps/40m, its farthest may reach 5Kbps/1Okm, may satisfy the common information and the pronunciation transmission speed and the distance request.

网络拓扑系统选用总线分布式结构，采用较成熟的工业控制网络CAN总线技术，其最高通信速率可达1 Mbps/40m，最远可达5Kbps/1Okm，可满足一般信息和语音传输速率和距离的要求。

The network analysis situs system selects the main line distributional structure, uses the mature industry control network CANBUS technology, its highest correspondence speed may reach 1 Mbps/40m, its farthest may reach 5Kbps/10km, may satisfy the common information and the pronunciation transmission speed and the distance request.

网络拓扑系统选用总线分布式结构，采用较成熟的工业控制网络CAN总线技术，其最高通信速率可达1 Mbps／40m，最远可达5Kbps／10km，可满足一般信息和语音传输速率和距离的要求。

The active users are determined by users' channel state information and fairness. To obtain closed form solution for power and rate allocation, the algorithm uses the asymptotic Gaussian convergence characteristics of the packet outage probability.

该算法在调度用户时兼顾用户的信道状态信息和公平性，利用误包率严格近似为高斯随机变量的性质得到传输速率和功率的闭式解。

We define the capacity of the channel to be its maximum information rate.

因此我们有了信息传输速率R的表达，而信道容量就是信息传输速率的最大

Discontinuous transmission is an important function in mobile communication.

1引言非连续传输技术(Discontinuous Transmission，简称DTx)又称话音激活技术，是数字蜂窝移动通信系统十分重要的功能之一，它通过动态检测输入端的有话音时段和无话音时段，改变话音编码速率，以达到降低无话音时段的信息传输流量，同时自动调整发射机的开和关，即只在输入端有话音

In the short wave Ionized layer reflection channel, the tropospheric scatter channel, and the moves channel, the clear channel and so on in the actual channel, because of the cloud layer%26rsquo;s, the sierra%26rsquo;s and numbers of high-rise construction%26rsquo;s influence in the city, it can produce the multi- diameters fading, causes the serious mark disturbance, and will limit the speed of the intelligence transmission.

在短波电离层反射信道、对流层散射信道、移动信道、广播信道等实际信道中，由于云层、山脉和城市中林立的高层建筑的影响，会产生多径衰落现象，引起严重的符号干扰，限制了信息传输速率的提高。

The system used a high-speed data acquisition unit which frequency sampling reach to 20MHz, and used a CAN bus with strong anti-interference and high transmission s...

该系统采用了一套采样速率可达20MHz 的高速数据采集系统，并采用抗干扰性强、传输速率高的CAN 总线进行上下位机通信，同时该系统的上位机软件可实现在线监测数据的软件滤波处理、数据库的信息查询、数据的分析显示和监测信息的网络发布功能。

Including : 1, wiring system : as wiring harnesses box center will signal cables distribution to the appropriate location, and through wiring boxes for the convenience of control and management ;2, transmission conductors : weak electricity more types of signal wire, coaxial cable, UTP, as audio transmission lines, transmission lines for the transmission rate is the main signal decay and ;3, terminals : the main categories of information, including panels ;4, various information appliances : such appliances will have a receiving or sending information available, including television, computers, network appliances.

其中包括：1、布线系统：以配线箱作为配线中心，将信号线缆分布至合适的位置，并能通过配线箱进行方便的控制和管理；2、传输导线：弱电信号导线种类较多，有同轴电缆、双绞线、视音频传输线等，对传输线的要求主要是传输速率以及信号衰减；3、终端设备：主要包括各种信息类面板；4、各类信息家电：此类家电都带有信息接收或发送端口，包括电视、电脑、网络家电等。

Video server sends a RSVP message to reserve resource for client, and the system calculates and analyses QoS parameters using control information of RTP/RTCP packets and ICMP Echo request message, and controls the transmission grade by corresponding strategy to ensure network QoS, which enhances the system reaction to network condition and stabilizes the throughput and solves the problems of data transmission and using bandwidth fairly between multicast data and other kind of data when network is congestible and unstable.

整个模型系统主要由视频服务器、路由节点和客户端构成，通过RSVP协议进行资源预留协商，并在传输过程中利用RTP/RTCP包中携带的控制信息结合ICMP Echo请求报文提取QoS参数，对其进行分析判断，采用相应策略对传输级别进行实时控制，保障了网络QoS，提高了系统对网络状况的反应速度，降低了传输速率的波动性，较好解决了网络拥塞和不稳定时数据的有效传输以及与其他数据流公平占用带宽的问题。

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。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。