Technologies and standards forTD-SCDMA evolutions to IMT-advanced
Technologies and standards forTD-SCDMA evolutions to IMT-advanced
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DOI：
10.1109/mcom.2009.5350368
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发表时间：
2009-12
影响因子：
11.2
通讯作者：
M. Peng;Wenbo Wang
中科院分区：
文献类型：
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作者：
M. Peng;Wenbo Wang
目前，TD-SCDMA在中国的商用带来了许多关于TD-SCDMA技术实施、市场和应用的问题。为了使TD-SCDMA获得成功，期望从当前的TD-SCDMA标准向国际移动的标准演进。TD-SCDMA标准和技术将在中国走国产化演进道路，顺利过渡到下一代移动的通信系统。本文简要介绍了标准和关键技术的演进策略，并将演进分为三个阶段。综述了TD-SCDMA演进的现状，并对不同演进阶段的技术和标准进行了分析。在第一演进阶段中规定了单载波和多载波高速分组接入，以保证分组业务的高传输比特率。同时，支持广播业务，HSPA演进也纳入该阶段。在第二演进阶段中定义长期演进，以接近与移动的WiMAX类似的性能，其中利用基于信道互易性的多天线技术。第三阶段是在TD-LTE演进的基础上，向IMT-Advanced系统演进，成为后3G系统的替代标准。介绍了3GPP标准与地方标准的不同之处。讨论了在不同发展阶段的一些挑战性工作和开放性问题。
The current TD-SCDMA commercialization in China brings about many issues concerning the implementation of TD-SCDMA technology, the market, and its applications. In order to make TD-SCDMA successful, evolution from the current TD-SCDMA standards to international mobile telecommunications-advanced are anticipated. TD-SCDMA standards and technologies will take a home-made evolution path in China, aiming at a smooth migration to the next-generation mobile communication system. This article provides a brief description of the evolution strategies of both the standards and key technologies, in which the evolution is divided into three phases. The state of the art of TD-SCDMA evolution is surveyed, and its technologies and standards in different evolution phases are characterized. Single- and multi-carrier high-speed packet access is specified in the first evolution phase for guaranteeing the high transmission bit rate of packet services. Meanwhile, broadcast services are supported, and the HSPA evolution is also incorporated in this phase. Long term evolution is defined in the second evolution phase for approaching similar performance as mobile WiMAX, where channel-reciprocity- based multiple antenna techniques are utilized. The last phase is the revolution to the IMT-Advanced system and becoming one alternative standard in beyond 3G systems, which is based on the evolution of TD-LTE. The difference of standardizations between 3GPP and local standard releases are introduced. Some challenging work and open issues in different evolution phases are discussed as well.