查询词典 transmission channel

"As compared with the application of analog channel transmission, the application of digital channel transmission is advantageous as follows:"

与采用模拟信道传输相比，采用数字信道传输有以下主要优点

Digital Data Network is a data transmission network by using digital channel. By contrast with analog channel, it has some strongpoint, such as higher transmission quality, greater speed, better utilization factor of bandwidth and so on.

数字数据网是利用数字信道传输数据信号的数据传输网，利用数字信道传输数据信号与传统的模拟信道相比，具有传输质量高、速度快、带宽利用率高等一系列优点。

First, the S-CDMA-HFC system with integrated traffic is introduced and the method of traffic integration is given. Second, the upstream channel capacity of the S-CDMA-HFC system with integrated traffic that has the same rate is analyzed. The chronoff limit and Gaussian approximate equation of the upstream channel cutoff probability are derived. Third, the impact of the selection of the line transmission rate on the upstream channel capacity of the S-CDMA-HFC system with integrated traffic is discussed in detail. The cutoff probability and throughout equations of the upstream channel with different integrated traffic are derived. Fourth, the impact of the power control error on the capacity is discussed. Results show that the power control error will degrade the upstream channel capacity and have different influence on the different traffic. Finally, the capacity requirement of the initialization process is raised. Analytical results show that the initialization process will impact on the capacity slightly.

首先，简单介绍了综合业务S-CDMA-HFC系统，给出了业务综合的方法；然后，分析了具有相同码率的综合业务条件下的S-CDMA-HFC系统上行信道容量，导出上行信道中断概率的切尔诺夫上限和高斯近似公式；然后，详细讨论了基本传输速率的选择对综合业务S-CDMA-HFC系统上行信道容量的影响，导出了不同业务综合条件下上行信道的中断概率和吞吐量公式；然后，讨论了功率控制误差对综合业务S-CDMA-HFC系统上行信道容量的影响，结果表明功率控制误差会使上行信道容量下降，且对不同业务的影响程度是不同的；最后给出了初始接入的容量要求，分析结果表明初始接入将对综合业务S-CDMA-HFC系统上行容量带来影响，但不明显。

The relates to the prevention of channel package losing in audio code transmission, featuring in the BCH encoding for each audio parameter for barrel shape displacement superposition, packing and channel transmission.

抗信道恶劣丢包伴随误码的语音编码传输方法属于语音编码传输抗差错技术领域，其特征在于，该方法在编码端对语音参数码流分组并对每个分组进行BCH编码，然后对信道编码后的数据分组进行桶形移位联合叠加，打包合路送信道传输。

We focus on how the initial phases of two harmonically driven potentials affect the total transmission probabilities and channel to channel transmission.

其中我们考虑了从一个通道到另外一个通道的几率，并且考虑了换一个入射方向所产生的不一样的结果。

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 better transmission property can be achieved by using this method. This method is realized in this paper, and simulation shows that the method of nonuniformly parting the channel has great potential to improve the transmission property of the channel.

论文实现了二叉树分解的子信道划分方法，给出了非均匀带宽划分的比特分配结果，和均匀带宽划分的子信道比特分配结果进行了比较，并且通过改变小波包分解的参数模拟了其性能。

At first, setting up the arith relation between the signal input and the signal output of the generalized multi-carrier system of the Discrete Fourier Test spread-spectrum; then setting equilibria parameters of the frequency field equilibria subcarrier of the generalized multi-carrier system of the DFT spread-spectrum according to channel frequency response, channel noise variance and equilibria method; then calculating average power of useful signal, interferential average power between signals as well as noise variance of the generalized multi-carrier system receiving terminal of the DFT spread-spectrum according to the arith relation as well as the frequency field equilibria parameter, and recomputing available signal information noise ratio, so as to calculate the available signal information noise ratio of the generalized multi-carrier transmission system accurately, the method for estimating the available signal information noise ratio can be used for link self-adapting transmission solution of the generalized multi-carrier system based on Discrete Fourier Test spread-spectrum and radio material management.

一种DFT扩频的广义多载波系统的SINR估计方法，其通过首先建立所述离散傅立叶变换扩频的广义多载波传输系统的信号输入输出之间的数学关系，然后根据信道频率响应、信道噪声方差和均衡方法，设定所述DFT扩频的广义多载波传输系统的频域均衡子载波的均衡系数，再根据所述数学关系及所述频域均衡系数分别计算所述DFT扩频的广义多载波传输系统接收端有用信号的平均功率、信号间干扰的平均功率以及噪声方差，再计算有效信干噪比，如此以实现对广义多载波传输系统的有效信干噪比的准确计算，该有效信干噪比估计方法可用于基于离散傅立叶变换扩频的广义多载波传输系统的链路自适应传输方案和无线资源管理方面。

To select a transmission mode to use for a data transmission via a MIMO channel from station A to station B, station A obtains channel information used for spatial processing and determines the age of this information.

要約 为了选择传输模式以用于从站A到站B通过MIMO信道进行的数据传输，站A获得空间处理所用的信道信息并确定该信息的寿命。

One transmission cell to another while maintaining the DVB-H service.· For a number of reception scenarios; indoor, outdoor, pedestrian and inside amoving vehicle, the transmission system shall offer sufficient flexibility and scalability to allow the reception of DVB-H services at various speeds, whilstoptimizing transmitter coverage.· As services are expected to be delivered in environments that suffer high levels of man-made noise, the transmission system shall offer the means to mitigate their effects on the performance of the receiving terminal.· As DVB-H aims to provide a generic way to serve handheld terminals in various part of the world, the transmission system shall offer the flexibility to be used in various transmission bands and channel bandwidths.

因此DVB-H采用分时方式的资料传送形式，把原本通道频宽是由其它节目共同分配享有的，现在只可以让某一个节目使用全部的频宽所以让节目传送的位元率提高了，相对的减少传送的时间，但跟DVB-T一样在单位时间内所传送的资料是一样多的，由於DVB-H采用分时多工的方式传送资料所以接收器只在该节目传送的时间内接收该笔资料，而其它时间则不接收然后在等一个单位时间内，该节目的资料再传送时在接收，如此开关开关达到收到整部节目的资料，并大量的减少持续接收节目所消耗的功率，接下来由於DVB-H采用4K正交分频多工编码的方式，虽然涵盖的范围没有DVB-T大但对高速移动的时候接收信号时的效果会比较好。

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