本文研究OFDM分组传输系统的符号同步与频偏估计算法。
This paper investigated the timing and frequency offset estimation algorithm of OFDM burst transmission systems.
仿真结果表明该协议能在水声环境下取得优良的吞吐性能和较低的分组传输时延。
Simulation results show that the proposed protocol can obtain higher throughput performance and lower packet transmission delays under the circumstances of underwater acoustic.
选择是基于在相关分组传输期间进行的或在其传输之前进行的无线电链路质量的度量。
The selection is based on measures of the radio link qualities made during transmission of the relevant packet or made prior to its transmission.
上述措施使分组传输路由很好地避免了拥塞节点，减少了网络瓶颈对网络性能的影响。
With the above properties, the protocol can bring down the congested nodes and bottlenecks in the networks, and improve the network performance.
介绍了分组传输系统频域均衡器的结构和设计方法，并研究了其误码率（BER）性能。
In the paper, we introduce the structure of frequency -domain equalizer and its design. its BER performance are also studied.
UPMA协议对不同的业务类型赋予不同的优先级，并用轮询方式妥善地安排节点的分组传输；
UPMA protocol endows different priority levels to different types of traffic, and can perfectly schedule the transmission of mobile terminals (MTs) by means of polling.
与时域均衡器的比较表明，频域均衡可较大地改善分组传输系统的均衡效果，缺点是接收端的计算量有所增加。
The simulation results show that the frequency-domain equalization approach can improve the BER performance great-ly than the time -domain equalization. The drawback of the…
本文简要介绍了VOIP的基本概念和软件结构，重点分析了VOIP的分组传输过程，并对VOIP通信中的网络问题及解决方法进行了探讨。
This paper introduces briefly the concept and software architecture of VOIP and mainly analyses transmission of packets and solutions of network problems.
如同在Wikipedia中所定义的，Internet是世界范围内、可公开访问的一系列互相连通的计算机网络，这些网络通过使用标准Internet协议(ip)的分组交换传输数据。
As defined in Wikipedia, the Internet is a worldwide, publicly accessible series of interconnected computer networks that transmit data by packet switching using the standard Internet Protocol (IP).
根据当时的资源可用情况，网络为每个分组分配一个路径，从而为其上传输的这些分组设定了与众不同的传输路线。
The network over which the packets travel routes them independently of one another, allocating the path that each is to take according to the resources available at that instant.
然后，您可能不得不在Linux设备上配置Bluetooth芯片组，以通过HCI传输接口而不是P CM接口收发sco音频数据分组。
You might then have to configure the Bluetooth chipset on the Linux device to receive and send SCO audio packets over the HCI transport interface rather than the PCM interface.
本文主要是对城域网中一种新型的数据传输技术—弹性分组环（RPR），进行了详细地探讨和深入地研究。
In this paper, one new data transport technology named Resilient Packet Ring (RPR) in metropolitan area networks is discussed and anayzed in a great extend.
分组语音技术是指将语音信号转化为一定长度的数字化语音包，采用存储转发的方法以包的形式进行交换和传输的技术。
Packet voice technology converts voice signal to digitized voice packet in certain length, then switches and transmits these packets by means of store and forward.
我们必需有发生，以紧凑的声音压缩成一个具有相当规模的数据，然后吃了分组交换传输网络。
Therefore, there needs to be a compression taking place to compact the voice data into a considerable size before it gets transmitted over a packet switching network.
目前，移动公司建成的基于2.5代移动通信gprs网络能够提供端到端的无线分组交换数据业务，提供低成本的数据无线传输业务。
Presently, Mobile Communication Company's GPRS network that based on the 2.5 G can supply packet radio service and low cost service of wireless transmission.
蜂窝数字分组数据(CDPD)是利用现有的模拟蜂窝电话网来传输数据的一种新技术。
The cellular digital packet data (CDPD) is a system which borrows idle radio channels from the existing cellular mobile telephone networks for packet data transmission.
呼之欲出的第三代(3G)移动通信不仅能提供现有的各种移动电话业务，还能提供高速率的宽带视频业务，支持高质量的话音、分组数据业务以及实时的视频传输。
The incoming 3g could not only support the existing mobile operations, but also broad band video operations high quality voice packet data transmission and real time video communication.
气垫船动力装置由如下各部分组成：主机，功率传输装置，推进器，主推进器舵组合装置，垫升装置以及为动力装置服务的系统和装置。
Hovercraft is a kind of high-powered watercraft. the propulsion system of hovercraft concludes mainframe power transfer device thruster air propeller installation and assistant system.
而以牺牲正交性和部分分集增益为代价来获得更高传输速率的非正交空时分组码又会使误码性能降低。
Whereas the non-orthogonal space-time block codes which obtain higher transmission rate at the cost of orthogonality and partial diversity gain may degrade the performance.
高数据速率、高可靠性的分组数据传输将成为未来无线通信的主流。
High speed packet data transmission with high reliability is the most promising direction for the future wireless communications.
在指出传统的MAC层协议无法提供能量高效的可靠传输后，提出了一种以效率为中心的可靠通信机制——分组确认机制。
After pointing out that traditional MAC protocol can not provide energy efficient reliable transfer, a new group-based acknowledgement mechanism, which was efficiency centric, was brought forward.
CDPD网络利用现有的AMPS蜂窝网，传输无线分组数据业务。
CDPD networks make use of current AMPS networks to transfer radio packet data.
在移动德律风技巧中，2.5G和谈将2G系统扩展到供给诸如分组互换连接（GPRS） 的附加效用和更高的数据传输速度（HSCSD、EDGE）。
In mobile telephony, 2.5G protocols extend 2G systems to provide additional features such as packet-switched connection (GPRS) and enhanced data rates (HSCSD, EDGE).
这是由于在分组交换数据网络中传输语音时发生了数据包丢失。
This is usually the result of packet loss when transmitting voice over a packet-switched data network.
再利用铁路分组交换网完成机车运行数据到机务段的实时传输。
And through Railway Packet Switching Network the data can access the Railway Branch Locomotive Depots.
该算法能在区分服务环境下对确保传输的分组丢弃优先级进行标记。
This algorithm can be used to drop the priority of the mark to assure forwarding packets in DiffServ network.
所建立的大城市停车诱导系统主要由信息采集子系统、信息处理子系统、信息传输(通讯)子系统、信息发布子系统四部分组成。
The Parking Guidance system consists of the information collection subsystem, the message processing subsystem, the message transmission subsystem and the message distribution subsystem.
介绍了一种用于模拟A TM网中的分组复用语音流传输的模型：流体流动模型。
In this paper, a model for packet voice multiplexing system of ATM was introduced, which is called a fluid flow model.
介绍了一种用于模拟A TM网中的分组复用语音流传输的模型：流体流动模型。
In this paper, a model for packet voice multiplexing system of ATM was introduced, which is called a fluid flow model.
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