高比特律数字用户环路HDSL ？
高速数字用户环路HDSL ？
目前国内用户环路测试的市场需求正在迅速增加。
At present domestic market demand for subscriber loop test is increasing quickly.
介绍了用户环路接入网的概念、结构及接口的演变等。
The article presents the concept, structure and interface evolution of the subscriber loop access network.
实现了基于用户环路业务综合的复用的硬件电路部分。
The hardware circuits that are based on subscriber loop integrated service multiplex are also achieved.
目前，非对称数字用户环路ADSL宽带技术倍受关注。
Presently, Asymmetric Digital Subscriber Line (ADSL) wideband technique is paid attention to extremely.
宽带用户环路系统将为可视电话、视频娱乐节目等业务提供通路。
The wideband subscriber loop system provides access to services such as picturephone, video entertainment.
这些宽带用户环路系统将可视电话，视频娱乐节目等业务提供通路。
These wideband subscriber loop systems would provide access to services such as picturephone, video entertainment.
本文提出的系统尤其适合于固定无线系统和数字用户环路（DSL）。
The proposed system is of particular interest for fixed wireless systems and digital subscriber loops (DSL).
这些宽带用户环路系统将为可视电话、视频娱乐节目等业务提供通路。
These wideband subscriber loop systems would provide access to services such as picturephone and video entertainment.
这些宽带用户环路系统将为可视电话、视频娱乐节目等业务提供通路。
These wideband subscriber loop systems would provide access to services such as picture-phone, video entertainment.
数字信道应包括用户到网络的连接线在内，即用户环路的传输也应是数字的。
The digital channel includes the circuit section between an end user and the network, that is to say, the transmission on the end user's loop should be digitalized as well.
到目前为止，世界范围内的PSTN供应商已经投入了巨大的成本，包括建设、维护骨干网和用户环路。
Up to now, PSTN providers have invested a lot of costs in building and maintaining their bone networks and subscribers cycle circuit.
异步数字用户环路技术（ADSL）是在光纤用户网络普及之前，向用户提供宽带业务的一种过渡手段。
The asymmetric digital subscriber modulation technology is a transitional means to provide subscribers with broadband services prior to the popularization of light - fiber subscriber networks.
高比特数字用户环路(HDSL)技术是一种新的在双绞铜线上实现高速数据传输技术，有“铜光纤”之称。
HDSL is a new high-speed data transport technology realized over twisted-pair wires and is known as "copper optical fiber."
本文针对ISDN数字用户环路二线全双工的回波抵消传输方式，首先探讨了LMS、VLMS1自适应算法，并在此基础上提出改进的VLMS2算法。
This paper discusses firstly adaptive algorithms of LMS and VLMS1, being used widely in treating the problem of echo cancellation for full-duplex transmission in ISDN digital subscriber's loop.
用计算机仿真的方法在数字用户环路上实现了该算法，并测定其数字用户环路上所能获得的最大传码率，分析最大传码率与发送总功率的关系，给出比特分配结果。
On the digital subscriber loop we realized the algorithm, got the max receiving bit, analysed the relation between the max receiving bit and transmitted power, and got the result of bit allocation.
该方法使用了时频同步跟踪环路，从数据子载波提取相位误差，并利用频域插值补偿多个用户的估计频偏。
The system uses time-frequency tracking loops to extract phase errors from data subcarriers with frequency interpolation to compensate for the estimated carrier frequency offsets.
通过这些本地环路，多个用户按需竞争有限的核心网络资源。
Through those local loops multiple users compete for limited core network resources on demand and as available, with each switch serving as a point of contention.
通过这些本地环路，多个用户按需竞争有限的核心网络资源。
Through those local loops multiple users compete for limited core network resources on demand and as available, with each switch serving as a point of contention.
应用推荐