| 一种基于LTE TDD系统上行同步控制算法 |
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| 引用本文： | 陈禹,温向明,郑伟.一种基于LTE TDD系统上行同步控制算法[J].电子与信息学报,2010,32(8):1938-1942. |
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| 作者姓名： | 陈禹 温向明 郑伟 |
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| 作者单位： | 北京邮电大学信息与通信工程学院,北京,100876 |
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| 基金项目： | IMT-Advanced(第四代移动通信)干扰抑制网络架构关键技术研究及其标准化，北京市科技计划资助课题 |
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| 摘 要： | 该文提出了一种LTE TDD系统上行同步控制算法，为移动台提供发送的定时提前量。首先介绍了上行同步控制的过程，分析了利用用户信道估计信息检测信道冲激响应的起始位置、峰值位置和结束位置的方法，并详细描述了上行同步控制算法。仿真结果表明，UE(用户终端)速度为低速或高速以及不同的工作信噪比时，该同步控制算法都能够较好地工作，避免定时不准确导致的ISI。
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| 关 键 词： | LTE TDD 上行同步 信道估计 尾径估计 |
| 收稿时间： | 2009-05-31 |
Research on Uplink Synchronous Control in LTE TDD System |
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| Chen Yu,Wen Xiang-ming,Zheng Wei.Research on Uplink Synchronous Control in LTE TDD System[J].Journal of Electronics & Information Technology,2010,32(8):1938-1942. |
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| Authors: | Chen Yu Wen Xiang-ming Zheng Wei |
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| Affiliation: | School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | In order to determine the sending time for the mobile station, a novel synchronous control mechanism for the uplink in the LTE TDD system is proposed in this paper. Firstly, the principle of synchronous control is introduced. Secondly, according to the information used to estimate the channel status, the initial, peak and end position of impulse response is detected reasonably; Moreover, the method for controlling the synchronous of uplink is proposed. Results show the effectiveness of the mechanism under scenarios with different velocity and the degree of signal to noise, additionally, the ISI induced by the inaccurate timing can be avoided. |
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| Keywords: | LTE TDD |
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