| WiMAX物理层关键技术及其演进 |
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| 引用本文： | 刘巧艳,余秋星.WiMAX物理层关键技术及其演进[J].中兴通讯技术,2007,13(2):13-16. |
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| 作者姓名： | 刘巧艳 余秋星 |
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| 作者单位： | 中兴通讯股份有限公司 陕西西安710065 |
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| 摘 要： | WiMAX技术发展迅速,但是为了获得高效可靠的通信性能,并支持更高速率的移动环境,需要物理层关键技术进一步演进。为了支持移动性,IEEE802.16e标准(移动宽带无线接入)在IEEE802.16d标准(固定的宽带无线接入)的基础上进行了改进,在物理层引入了正交频分复用与多入多出相结合的技术,使传输速度成倍提高的同时能够支持一定的移动性。在未来的IEEE802.16m中还将会引入更加先进的空中接口技术。
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| 关 键 词： | 全球微波互操作 多输入多输出 正交频分复用 物理层关键技术 |
| 文章编号： | 1009-6868（2007）02-0013-04 |
| 收稿时间： | 2007-01-19 |
| 修稿时间： | 2007年1月19日 |
Key Technologies for Physical Layer of WiMAX System and Its Evolution |
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| LIU Qiao-yan,YU Qiu-xing.Key Technologies for Physical Layer of WiMAX System and Its Evolution[J].ZTE Communications,2007,13(2):13-16. |
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| Authors: | LIU Qiao-yan YU Qiu-xing |
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| Abstract: | The Worldwide Interoperability for Microwave Access (WiMAX) technology has developed rapidly. However, the key technology for the Physical Layer (PHY) of WiMAX system requires further evolution for acquiring effective and reliable communication performance and supporting higher-speed moving environments,. Based on IEEE 802.16d (for fixed broadband wireless access systems), IEEE 802.16e (for mobile broadband wireless access systems), introduces a combination of Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) technologies into the PHY to support mobility. It enables the transmission rate doubled while supports mobility to some extent. In the future, IEEE 802.16m will adopt more advanced air interface technologies. |
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| Keywords: | WiMAX MIMO OFDM key technology for PHY |
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