查询词典 channel-section

The topics covered include the basic concepts of information theory--entropy, mutual information, channel capacity, information rate, Shannon's noiseless coding theorem and Shannon's fundamental coding theorem; modeling of information sources--zero-memory and Markov models; modeling of information channels--BSC and BEC channels, additivity of information and cascaded channels; construction of compact source codes--Kraft inequality, compact codes, Huffman and LZW compression codes; and analysis and design of error-control channel codes--Hamming distance, binary linear codes and the parity-check matrix, Hamming codes, checksum codes, cyclic codes and the generator polynomial and CRC codes.

课程的内容包括：信息论的基本概念（熵、交互信息、信道容量、信息率、 Shannon无噪声编码定理和Shannon基本编码定理）、信源模型（无记忆模型和Markov模型）、信息信道模型（BSC 和 BEC模型、信息的可加性和级联信道），紧致信源编码设计（Kraft不等式，紧致编码，Huffman 和LZW压缩编码）以及差错控制信道码的设计与分析（海明距离，二元线性码，奇偶校验矩阵，海明码，校验和，循环码，生成多项式和CRC码）。

The number of chosen transmit antennas is equal to the rank of channel matrix to ensure that the resulting channel matrix is full column rank.

为了保证信道矩阵是列满秩，因此选择出的天线子集中的发射天线数量等于信道矩阵的帙数。

Regard B2B electron business affairs as the website, the page of correspondence of place of the one class that the product classifies, 2 class is channel page and column page respectively, it is extremely tall that page content is spent related the keyword of set to it, if match the URL with the standard, the weight of the page is met perfectly, so its secure general channel page, column page rank of keyword, core keyword is before leaning quite, what should make great efforts truly is final page and home page.

作为B2B电子商务网站，产品分类的一级、二级所对应的页面分别是频道页和栏目页，页面内容与之设定的关键词相关度是极高的，如配与规范的URL，页面的权重会相当不错，所以一般的频道页、栏目页其固定关键词、核心关键词排名都是比较靠前，真正要下功夫的是最终页和首页。

The equations above model the synchronisation channel as orthogonal, while only the α fraction of common channel power is experienced as intracell interference.

上述等式所模拟的同步信道的模型是不相关的，而只有公共信道功率的不相关因数涉及到互区干扰。

A channel-to-channel voltage rating and a common-mode voltage rating of at least 500V is desirable.

通道－通道电压额定值和共模电压额定值至少为500 V才是合理的。

Bandwidth augmentation is the ability to add another communications channel to an already existing communications channel.

带宽增加是指可以在一个现有的通信信道中增加额外的通信信道。

However, there exists important difference between watermark channel and common communications channel, which results in some problems in the application of communications theory.

然而，数字水印信道与一般通信信道之间有着比较大的差别，使得直接在水印信道中应用通信技术存在着许多问题。

The company has completed many key contracted construction and maintenance tasks such as communications channel at economic development zone, bridge and communications channel along provincial highway, power and city planning auxiliary projects and so on.

公司已承揽了经济开发区通信管道建设、大桥、省道沿线通信管道工程施工及电力、市政配套工程等多项重量级的施工、维护任务，获得了良好的社会效益和经济效益，受到了社会各界的一致好评。

The failure of Compaq's electronic channel is the real sample of the outcome of channel conflict.

康柏电脑网络渠道的失败，就是渠道冲突的一个最真实的写照。

to reduce the impact of carrier frequency offset in ofdm system,this thesis designs a new carrier frequency offset estimation scheme for ofdm system.the carrier frequency offset estimation includes acquisition and tracking.we adopt variable step size adaptive algorithm.the acquisition range of the proposed algorithm is as large as one half of the overall signal bandwidth.through this method we can not only avoid the feedback by using forward error correction,but also reduce the times of complex multiplication in order to reduce the power consumption of the system.this algorithm not only has low complexity and fast convergence nut also can improve the demodulation performance of ofdm system.computer simulation illustrates the superior performance of the proposed algorithm with regard to estimation accuracy in both awgn channel and multi—path channel.

摘 要：为了减小正交频分复用系统受频率偏差的影响，在ofdm系统中设计了一种新的载波频偏估计算法。频偏估计包括跟踪和捕获两个阶段，文中采用变步长自适应算法来进行跟踪，这个跟踪算法的捕捉范围是整个信号带宽的一半。通过此方法，不但可以利用前向纠错的方式来避免反馈，而且可以缩减复数乘法的次数以降低计算复杂度和系统功耗。该方法运算复杂度低，并具有较好的收敛性，能改善odfm的解调性能。从计算机的仿真效果可以看出无论是在awgn信道上还是在多径信道上都表现出了卓越的性能。

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。