查询词典 bandwidth

Unfortunately, the result has not been competition to beat down prices and boost speeds, but cosy duopolies that keep bandwidth scarce and carve the market up between incumbents.

不幸的是，这样的竞争结果不是降低价格，提升网速，而是成了狼狈为奸的两强垄断，这使得带宽非常有限，现有市场格局分崩离析。

This invention discloses a duplexer and a multiplexer of the communication system and a method to realize them on a PCB circuit, which applies a 3db bridge and a low pass filter to constitute a hopstreet duplexer without waste band channels, in which, the signals are shunted and combined by the design of the circuit structure and power distribution of the 3-db bridge and phase offset function, the band filter of the low pass filter and the reflection function of a stopband to make up of a costless duplexer in theory to merge the two channels of different frequencies and reduce loss to increase volume and working bandwidth, then a multiplexer is formed by cascading multiple duplexers.

本发明涉及通信设备，公开了一种通信系统双工器和多工器以及双工多工方法，使得双工器和多工器能够在PCB电路上实现，并且体积小、损耗小、成本低、容量大。本发明中，采用三分贝电桥、低通滤波器构成无损耗频带信道合路的双工器，其中通过电路结构的设计并利用三分贝电桥的功率分配和相位偏移功能将各路信号进行分路和组合，利用低通滤波器的频带滤波和阻带反射功能联合三分贝电桥构造一个理论无耗的双工器，使两路不同频率的信道合路，降低的损耗、提高容量和工作带宽。通过多个上述双工器的级联构成多工器。

In the above guiding ideology, Chongqing Telecom has increased the intensity of IT information construction. Empoldered the SF system - based on workflow technology of bandwidth business for computer management information system.

在以上指导思想下，重庆电信加大了IT信息化建设力度，开发了基于工作流技术的带宽型业务开通计算机管理信息系统——即SF系统。

In wireless broadband digital communication, Inter-Symbol Interference caused by time disperse of radio channel is one of main factors that limit bandwidth of communicated information and system performance of communication. In receiver, Orthogonal Frequency Division Multiplexing system can easily cancel ISI and equalize frequency-selective fadings that are both caused by time disperse of radio channel.

在这一系统中，无线信道时延扩展引起的符号间干扰是限制传输性能和信息速率的主要因素之一；而在消除符号间干扰和均衡由无线信道时延扩展引起的频率选择性衰落方面，正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)技术具有明显优势。

Components that exhibit significant loss over a bandwidth of over 100 MHz, ferrites can be characterized as high frequency

电感及电容所组成的电磁波干扰滤波器，有可能会使电路感应而形成共振，造成额外有电磁波干扰问题的频带。

At last, the frequency spectrum analysis shows that the four-winged chaotic attractor has extremely wide frequency bandwidth compared with that of the Lorenz system and Chua circuit, which is important in practical applications in communication encryption etc.

最后，通过比较该四翼混沌吸引子的系统、Lorenz系统、Chua氏电路等混沌信号的频谱发现，四翼混沌吸引子的系统信号具有极宽的频谱带宽，该特性在通讯加密等工程应用中具有重要价值。

Firstly two characteristic points of the open-loop frequency are identified based on relay feedback experiments: the ultimate point and the bandwidth point.

通过继电反馈辨识系统开环带宽度点和临界点，利用带宽点的信息建立一阶加纯延迟模型。

Linear frequency-modulated pulse is one of the most important large time-bandwidth product signals, but it demands large amount of calculations for digital processing.

针对TMS320C6201的特点，提出了在VLIW体系结构下，提高FFT并行运算效率的方法，从而使系统完成512点数字脉冲压缩的时间仅为124us，基本达到TMS320C6201的性能极限。

In this paper, for the first time, the impact of the noise frequency-modulated signal to a wide band linear frequency modulation matched filter is studied for different modulation noise variance and bandwidth.

研究了噪声调频信号中调制噪声方差及带宽的选择对宽带线性调频匹配滤波器的影响。

Diamond has many outstanding physical, chemical, optical, mechanical, and electrical properties such as the highest thermal conductivity, the extreme chemical inertness, the highest known hardness, the lowest compressibility of known material, high in Young's modulus, low in friction coefficient, wide in band gap, and a wide optical transparency bandwidth.

中文摘要钻石拥有许多优异的物理、化学、光学、力学与电学特性，例如它拥有最高的热传导系数、具化学惰性、具有最高硬度、高杨氏系数与低摩擦系数、具有宽能隙与宽的光学穿透频域。

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