共查询到18条相似文献,搜索用时 187 毫秒
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介绍了应用于第三代移动通信TD-SCDMA标准的移动终端射频模块的设计和实验测试结果。该射频模块具有结构紧凑、体积小、功耗低、兼容性强、易于与基带电路接口等优点。测试结果表明,其各项指标完全满足3GPP规范的相应要求。 相似文献
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Dan Temple 《中国集成电路》2014,(8):56-59
本文介绍一种可行的概念,通过符合3GPP长期发展高级(LTE-A)标准的光传送网(OTN)来传送数字基带射频数据,这一标准支持云射频接入网(C-RAN)体系结构。基带模块和远程射频模块之间的传送符合公共射频接口(CPRI)以及OBSAI参考点3-01(RP3-01)接口协议。本文的目的旨在阐述,在OTN上实现CPRI和OBSAI传送,射频节点的数据完整性和时钟性能仍然满足严格的标准要求。 相似文献
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China goes solo [3G mobile radio] 总被引:1,自引:0,他引:1
《IEE Review》2003,49(2):20-21
China wants to keep up with the west by building 3G mobile phone networks. And the west is just as keen because China is expected to be the largest single market for mobile phones. With a penetration of just 15% into its massive 1.3 billion population, it has already overtaken the US in subscriber numbers. So western companies that make the wireless equipment for 3G have been watching the Chinese. government's position on standards very closely. In the autumn of 2002 it had to decide which of three competing 3G standards to support. So it chose all three. But in a clear hint as to where the Chinese government sees investment going, it gave a largely home-grown standard the lion's share of the spectrum. Compared with the 60 MHz allocated each to wideband-CDMA (W-CDMA) and cdma2000, the 155 MHz reserved for the time-division synchronised (TD-SCDMA) version of 3G represents a big gamble on a protocol that is unfinished. This has made some infrastructure equipment builders wary of spending even more on 3G R&D. Aspects of TD-SCDMA in China are discussed. 相似文献
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第三代移动通信技术的现状和展望 总被引:4,自引:0,他引:4
本文首先分析了第三代移动通信未来的业务和市场。回顾了第三代移动通信协议的标准化进程,分析了几种主流的第三代移动通信技术的特点和优势,特别分析了第三代移动通信标准化工作的最新内容和未来移动通信的可能发展方向,最后介绍了中国移动通信设备商在第三代移动通信设备研制和生产上的进展。 相似文献
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Recent advances on TD-SCDMA in China 总被引:3,自引:0,他引:3
Bo Li Dongliang Xie Shiduan Cheng Junliang Chen Ping Zhang Wenwu Zhu Bin Li 《Communications Magazine, IEEE》2005,43(1):30-37
China has fully embraced the remarkable growth and unprecedented penetration of mobile services, and has become the world's largest mobile cellular market. TD-SCDMA was proposed by the China Wireless Technology Standard (CWTS) Group in 1998, approved as one of the 3G standards by ITU in May 2000, and joined 3GPP in March 2001. This has been a major effort by China to advance its mobile communication systems and facilitate its own technological development in this critical area. TD-SCDMA, a combination of TDD and synchronous CDMA, offers several unique advantages over its alternatives, WCDMA and cdma2000, such as flexible spectrum allocation, low-cost implementation, and easier migration from GSM systems. This article reviews the development, key technical features, and deployment of TD-SCDMA in China. 相似文献
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TD-SCDMA(时分-同步码分多址)是我国提出的具有自主知识产权的3G标准,它和CDMA2000、WCDMA同为ITU确定的3G三大主流标准。首先简要介绍了TD-SCDMA系统的特点,然后分析了TD-SCDMA的增强型技术HSDPA(高速下行链路分组接入)。HSDPA是3GPP为了满足上下行数据业务不对称的需求提出的一种新技术,它大大地增加了下行数据业务的传输速率。最后介绍了TD-SCDMA的长期演进(LTE)。 相似文献
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Driven by the need for multivendor interoperability of femtocell devices and their supporting infrastructure equipment, the cdma2000reg standards community has been undertaking a large-scale and comprehensive effort to develop industry standards for femtocell devices and systems based on the cdma2000 family of radio access technologies. This article describes those standardization activities and provides an overview of the femtocell system architecture that has been developed within 3GPP2. 相似文献