Two kinds of vehicle synchronous orbiting satellite mobile communication systems are introduced.
介绍国内两种车载同步轨道卫星移动通信系统。
In satellite mobile communications, Doppler frequency offset is a negative factor that couldn't be neglected.
在卫星移动通信中，多普勒频偏是一个不能忽视的消极因素。
LEO satellite mobile communication system has become an important branch of global mobile communications system since it proposed.
低轨卫星移动通信系统自从提出以来就成为全球移动通信系统的一个重要分支。
A compound unicast routing algorithm is presented, making use of the characteristics of satellite mobile communication network topology.
利用卫星移动通信网的拓扑特点提出了复合单播路由算法。
The satellite mobile communication system, which is the emphasis of the academic research, is the most significant portion of the 3G communication system.
阐述了卫星通信的概况以及卫星移动通信系统的分类，重点介绍了低轨卫星移动通信系统的组成及其关键技术。
Through OPNET simulation, show that the dynamic routing algorithm has a smaller interstellar delay, to meet the LEO satellite mobile communication systems.
通过在OPNET中仿真验证，该动态星际路由算法具有较小的用户通话时延，能够满足低轨移动通信系统的需求。
The excellent location management scheme can reduce the system cost and improve the performance of the Low Earth Orbit Satellite Mobile Communication system.
低轨卫星移动通信系统中，高效的位置管理方案可以降低系统开销并且能够保证网络系统的性能。
All these will afford more detailed theoretical basis for further studying and simulating low-orbit satellite mobile channels simulator in the hardware platform.
这些都将为下一步在硬件平台上实现低轨卫星移动通信信道模拟器奠定了基础。
In MEO satellite mobile communication systems, the confirmation of cell dwell duration' s distribution is very important to constitute handoff str ategies properly.
在MEO卫星移动通信系统中，确定小区驻留时间分布对于合理地规划切换策略具有十分重要的意义。
This paper compares the ground mobile communication system and LEO satellite mobile communication system, then designs a CAC for LEO satellite communication system.
本文通过对比地面移动通信系统和低轨卫星移动通信系统，为低轨卫星通信系统设计了一种呼叫接入控制策略。
Terminal location update rate (LUR) is a very important index of Marine satellite mobile communication system, which affects the performance of whole system violently.
终端位置更新速率又是卫星通信系统终端位置管理的重要指标，直接影响到海上卫星移动通信系统的性能。
To reduce the LEO satellite mobile communication systems rely on ground mobile communication system, LEO satellite mobile communication systems must be introduced ISLs.
为了降低卫星移动通信系统对地面移动通信系统的依赖，系统必须引入星际链路。
By emulating the global traffic service through a LEO satellite mobile communication system under different access schemes, the performance of the networks are analyzed.
并参照某实际系统参数，对不同接入方案准则下的全球话务服务进行了系统仿真，得到了相应的系统性能参数。
Orthogonal frequency division multiplex (OFDM) is suitable for Broadband-satellite mobile communication system with the advantage of robustness to muti-path and high bandwidth efficiency.
正交频分复用(OFDM)技术具有抗多径衰落，频谱利用率高等优点，适合于在宽带卫星通信这种无线环境下进行高速传输。
Spread Spectrum technique is widely used in digital cell-phone mobile communication system, satellite mobile communication, inside wireless communication and future personal communication.
扩频技术在数字蜂窝移动通信系统、卫星移动通信、室内无线通信和未来的个人通信中被广泛采用。
According to the complicated time varying property of the satellite mobile communication channel, the BER performance of SCTCM in this kind of channel is analyzed and an upper bound is given.
并结合具体的卫星移动通信信道的复杂时变特性，对SCTCM在该信道下的误码率(BER)性能进行了理论分析，给出了误码率的一个上界。
By analyzing several typical interstellar routing algorithms, consider the dynamic factors of the LEO satellite mobile communication system, design a minimum user delay dynamic routing algorithm.
通过分析几种典型的星际路由算法，考虑系统的动态因素，为系统设计了一种基于最小用户延时的动态星际路由算法。
The SNEP will employ the MPM1000 Net Centric Waveform Satellite Modem to provide Multi-Frequency-Time Division Multiple Access Bandwidth on demand technology for tactical mobile operations.
该SNEP将采用MPM1000网络中心波形卫星调制解调器，为战术机动作战提供所需的多频时分多址接入带宽技术。
That suggests that GPS satellite navigation, capacity for mobile television and storage space for hundreds of music tracks will also be standard features before long.
这表明GPS卫星导航系统、支持手机电视、数百首音乐的存储空间在不久以后也会成为标准配置。
It also helps that the mobile communications and satellite technologies used by the project are able to surmount physical barriers such as geographic location.
不仅如此，该项目采用的移动通讯和卫星技术还能克服环境上的阻碍，如地理位置的不同。
Even as modern society arrives in this ancient village through satellite dishes and mobile phones, the Pundirs say they want their age-old tradition to continue with their children.
即便现代社会生活通过卫星天线和移动电话慢慢渗入到这个古老的乡村，辛旁迪一家说，他们希望这个古老的传统能在他们孩子的身上得以延续。
Moreover, it can do this in multiple ways, with built-in Wi-Fi, mobile, satellite and Bluetooth communication links.
它的传送途径多种多样，可以有内置无线、移动电话、通信卫星以及蓝牙；
Mobile and landline phone services were lost, and for more than 48 hours it was only possible to make contact on satellite phones, although many of these had also been lost.
移动和固定电话服务失灵超过48小时，人们只能通过卫星电话取得联系，然而这些卫星电话也大都丢失了。
The new feature of the system consists of its capacity to be integrated with mobile system from any other SIVE through satellite communications.
该系统的最新功能可集成到移动系统，通过卫星通讯与其他SIVE系统沟通。
TS2 Satellite Technologies won a contract to deliver mobile BGAN services for U.S. Army soldiers stationed in Iraq.
日前，TS2卫星技术公司赢得一份合同，将为驻守在伊拉克的美国陆军士兵提供移动全球宽带区域网络（BGAN）服务。
Selex communications will provide the Tetra mobile communications technology, as well as HF, satellite and microwave radio connections.
Selex通信公司将提供Tetra移动通信计划，以及HF、卫星和微波无线连接。
The picocells will use satellite links to allow mobile phones to be used during flight without interfering with ground-based networks.
Picocells利用卫星连接来实现飞行中移动电话的使用，从而不干扰地面网络传输。
Comtech's Model MT-2012 mobile satellite transceivers feature secure global positioning system (GPS) capabilities, as well as embedded radio frequency identification (RFID) technology.
Comtech公司的典型mt- 2012机动卫星无线收发器具备安全的全球定位系统(GPS)能力，也能嵌入无线射频识别(RFID)技术。
Comtech's Model MT-2012 mobile satellite transceivers feature secure global positioning system (GPS) capabilities, as well as embedded radio frequency identification (RFID) technology.
Comtech公司的典型mt- 2012机动卫星无线收发器具备安全的全球定位系统(GPS)能力，也能嵌入无线射频识别(RFID)技术。
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