而移动电话运营商则在花费巨资为高速接入提升自己的网络——并在寻求新的通信频率。
And mobile operators are spending huge sums to upgrade their networks for high-speed access—and are looking for new sources of traffic for them.
本课题的任务是为采用CDMA技术的数字移动通信系统设计一个应用于基站控制器（BSC）内部的高速数据交换网络。
The task of this research is to design a high speed data switch network which is used in a base station controller (BSC) of a digital mobile communication system based on CDMA technique.
高数据传输速率以及终端的高速移动，导致无线通信信道具有时间选择性与频率选择性两个特征。
High data transmission rates and high mobility give rise to time - and frequency - selectivity in wireless communication channels.
多码道技术广泛地应用于第三代移动通信系统，灵活地为用户提供高速分组数据业务。
Multi-Code technique is widely used in the third generation mobile communication systems, and flexibly provides high-rate packet data services for users.
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.
无线数据通信具有两大发展趋势，即低速的广域移动数据网及高速的局域无线数据网。
Wireless data communications is featured with 2 general trends: low-speed mobile data WANs and high-speed WLANs.
下一代无线移动通信系统的目标是支持高质量高速率的移动多媒体业务。
The goal of next generation wireless mobile communication system is to support high quality, high speed mobile multimedia services.
与普通的移动通信环境相比，高速移动环境最突出的问题是多普勒频移对通信产生的影响。
Compared with normal mobile communications environment, the most prominent problem of high mobility environment is the impact of Doppler shift on communication.
而作为移动通信核心技术之一的数字调制技术是实现高速、高效的移动通信系统的重要保证。
As the core mobile communications technology, one of the digital modulation technique is to achieve high-speed, highly efficient mobile communication system and an important guarantee.
码间干扰被认为是在移动无线通信信道中传输高速率数据时的主要障碍。
Inter symbol interference is regard of transporting the high rate data main obstacle in the wireless mobile channel.
下一代移动无线通信系统的目标是实现无所不在的、高质量的、高速率的宽带多媒体通信。
The next generation wireless mobile communication system is expected to provide ubiquitous, high-quality, and high-rate mobile multimedia transmission.
下一代移动无线通信系统的目标是实现无所不在的、高质量的、高速率的移动多媒体传输。
The next-generation wireless personal communication systems are expected to provide ubiquitous, high-quality, and high-rate mobile multimedia transmission.
分析发现，移动通信市场客户需求增长的高速性和移动通信业务本身的低边际成本是刺激移动运营商频繁推出业务套餐的主要动因。
The analysis indicates the high growth of the demand in the market and the low marginal cost of the business are the main factors for the operators to recommend suite business frequently.
下一代移动通信的目标是以最低的代价（带宽、功率、复杂度）为日益扩大的用户群提供更加可靠、高速的宽带数据业务。
The next generation mobile communication systems aim at providing higher quality and data rate transmission at the minimum lost (power, bandwidth or complexity ) in finite wireless resource.
差分酉空时码不需要任何信道状态信息，在通信终端处于高速移动环境下的快变衰落信道中仍能保持较好的性能。
Differential unitary space-time code(DUSTC) keeps good performance in rapidly fading channels when neither the transmitter nor the receiver knows the channel state information.
“3g”时代移动通信产品将基于高速的移动带宽技术，提供更为丰富的数据增值业务产品。
"3g" mobile communication products will be based on high-speed mobile bandwidth technology, provide more value-added services of data products.
在水声信道环境下，移动双方如何做到高速、高效、高精度的通信是水声通信领域的热点研究方向之一。
In underwater acoustic channel, how do mobile high-speed, high efficiency, high precision of communication is one of the hot researching directions in the field of underwater acoustic communication.
未来移动通信系统中，高速率的数据传输决定了宽带传输的必要性。
In future mobile communication system, the high transmission rate determines the choice of wideband transmission.
第四代无线通信中，多媒体移动服务需要高速率的传输机制。
Multimedia mobile services afforded in the 4th generation wireless communication require high bit-rate transmission technology.
而作为移动通信核心技术之一的数字调制技术是实现高速、高效的移动通信系统的重要保证。
As the core mobile communications technology, one of the digital modulation technique is to achieve high-speed, highly efficient mobile communication syst and an important guarantee.
目前，这两种技术已经成为第三代以及未来移动通信系统实现高速率、高传输质量、高系统容量的关键技术之一。
So the two technologies become key ones for high data rate, performance and capaticity in 3G mobile communication systems and beyond.
随着第三代移动通信系统逐渐投入商用，移动用户对高质量高速率的移动多媒体业务提出更高的期待。
Along with the 3rd generation mobile communication system being gradually applied in business field, subscribers are in stronger expectation of high-speed high-performance mobile multimedia services.
h2g2公司的移动通信部准备在今年晚些时候推出一些地方化的服务，明年推出带音频、视频和文字的高速版本。
S. and Japan. h2g2's mobile division expects to introduce some services based on localization later this year, and high-speed versions featuring audio, video and text by next year.
h2g2公司的移动通信部准备在今年晚些时候推出一些地方化的服务，明年推出带音频、视频和文字的高速版本。
S. and Japan. h2g2's mobile division expects to introduce some services based on localization later this year, and high-speed versions featuring audio, video and text by next year.
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