查询词典 channel-section

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 co-channel interference canceler includes: an NTSC interference rejection filter for removing co-channel interference from an input signal; a noise reducer for reducing noise by removing interference other than co-channel interference from the input signal; and a selection controller for determining whether or not co-channel interference exists in the signal output from the noise-reducer and selecting the NRF when such co-channel interference exists in the noise reduced signal.

该共用频道干扰抵消器包括：一个NTSC干扰抵消滤波器用于从输入信号中消除共用频道干扰；一噪声消减器用于从输入信号中消减共用频道干扰外的其它干扰；和一选择控制器用于产生一选择信号，用以通过确定来自噪声消减器的信号输出中是否存在共用频道干扰来选择NRF。

a scheme of channel estimation using cyclic prefix based on the measurement of the low-voltage power line channel model is presented.after obtaining the frequency response of pilot sub-channel under the state of comb-type pilot,the data sub-channel response is obtained by interpolating the frequency response in frequency direction.in the pilot-free data period,the estimation of the channel is carried out by using cyclic prefix in order to improve the performance of system error rate.

摘 要：通过实际测量给出低压电力线的信道模型，在此基础之上提出了利用循环前缀对信道进行估计的方法，即在梳状导频模式时，使用导频获得导频子信道频率响应后，对其在频域方向进行插值得到数据子信道响应，在其后没有导频的序列的数据周期内，使用循环前缀对信道进行估计，从而起到改善系统误比特性能的目的。

When free riding exists between channels, the competition between Internet direct channel and drop-shipping channel is studied. We find that providing Internet direct channel does not necessarily lead to lower expected payoff for Internet retailer, it depends on the effect of drop-shipping channel free ride on Internet direct channel. When the effect is good, the retailer can achieve higher payoff.

5在渠道之间存在免费搭乘现象的情况下，建立了drop-shipping渠道和网络直销渠道之间的竞争模型，指出供应商提供网络直销渠道后，并不一定就导致零售商利润的下降，这依赖于drop-shipping渠道免费搭乘网络直销渠道的效果，当效果高于一定水平时，零售商的利润增加。

In the invention, according to the channel selected by user, the client side determines the media server corresponding to the channel and the father node of the client side in the P2P system; according to the correlative information of the father node, the client side determines the initial fragment group ID of current process, and sends a request message for requesting the data of the channel to the media server; said request message contains said initial fragment group ID; said client side receives the channel data sent from the media server based on the initial fragment group ID, and receives the channel data sent from each father node.

本发明涉及互联网技术领域，尤其涉及一种网络通信数据处理方法、网络通信系统及客户端，用以减少选定频道的播放延迟。在本发明中，客户端根据用户选定的频道确定对应的媒体服务器及该客户端在点对点系统中的父节点；该客户端根据父节点的相关信息确定本次数据处理的起始分片组标识，并向该媒体服务器发送请求该频道数据的消息，该消息中携带该起始分片组标识；该客户端接收该媒体服务器根据该起始分片组标识发送的该频道的数据，且接收各父节点发送的该频道的数据。

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。

And the channel composed of the new radio induction system for communication is different from the parameter-constant channel and the traditional parameter-changing channel, its parameter is decided by the mutual induction between its antenna and induction-cable, by the location of its antenna, by the signal frequency passing through, its parameter has nothing to do with the time parameter. The channel composed of the new radio induction system is a new parameter-changing channel independently of time for communication.

而且，由新型无线感应系统组成的信道既不是恒参信道，也不是一般目前所知的变参信道，其信道传递函数的幅值只与信号的频率有关，与系统中天线和感应电缆之间的互感和天线的位置有关，而与时间无关，其信道传递函数的相位只与天线的位置有关，而与时间无关，由新型无线感应系统组成的信道是一种不随时间变化的新型变参信道。

This invention relates to a gas reburning and double-channel rich/lean integrated combustor of low Nox, in which 7 air nozzles and 7 fuel nozzles interlace with each other. The air nozzles are all connected to a bellow and receive air supply from a large tank-type bellow. The fuel nozzles are connected to respective fuel system through the bellow. From up to down, the 7 fuel nozzles are: the gas nozzle, the double-channel up-lean and down-rich coal powder nozzle, the double channel up-rich and down-lean coal powder channel, 3 double-channel level rich/lean coal powder nozzle (the rich phase is near the flame), and the oil nozzle inside the nethermost air nozzle.

气体再燃与双通道浓淡集成型低Nox燃烧器，7个空气喷嘴和7个燃料喷嘴交错布置，各空气喷嘴与风箱连接，由一个槽型体大风箱供风，各燃料喷嘴均穿过风箱同各自的燃料系统连接，7个燃料喷嘴从上至下依次排列为：燃气喷嘴、双通道上淡下浓煤粉喷嘴、双通道上浓下淡煤粉喷嘴和3个双通道水平浓淡煤粉喷嘴，燃油喷嘴置于最下边的空气喷嘴中。

The method comprises A: separately configuring different common channel priority indication for different service data stream transmitted on same dedicated service channel; B: according to sequence from high to low of public channel priority indication for different data stream, priorly scheduling public channel high priority indication service data stream for transmitting at every moment; C: if service data stream of low common channel priority indication being not scheduled in a preset reference time period, then upgrading the service data stream common channel priority indication, then return to B.

分别为在同一专用业务信道上传输的不同业务数据流配置不同的公共信道优先级指示；B。在每一时刻，所述专用业务信道按照不同业务数据流的公共信道优先级指示由高至低的顺序，优先调度公共信道优先级指示高的业务数据流进行传输；并C。预设一参考时间段，若公共信道优先级指示低的业务数据流在所述参考时间段内总没有得到调度，则将该业务数据流的公共信道优先级指示升高，然后返回B。

In this dissertation, the characteristics of the OFDM wireless channel are modeled and simulated, the work as follow has been completed.(1) Based on studying the theory of the spread of wireless channel, the characteristics of wireless channel are analyzed, the models of a variety of fading channel are established, and the model of the wireless channel with tap delay line and Jakes channel model are designed.

本文主要是对OFDM系统无线信道特性进行建模与仿真，完成了以下工作：(1)在研究了无线信道传播理论基础上，分析了无线信道传播特性，建立了各种衰落信道的结构模型，设计了无线信道抽头延迟线模型和Jakes仿真模型。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。