| 3G终端EVM指标一致性测试算法的研究 |
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| 引用本文： | 金磊,王冰,李春媛.3G终端EVM指标一致性测试算法的研究[J].高技术通讯,2006,16(8):771-777. |
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| 作者姓名： | 金磊 王冰 李春媛 |
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| 作者单位： | 北京邮电大学无线新技术研究所,北京,100876 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 分析了EVM指标一致性测试需求和传统测试算法的缺陷,提出了一种基于准确的频偏估计和初始相位估计,快速、精确地测量终端EVM指标的算法.该算法不需要对信号进行解调,而是通过高精度的频偏估计和初始相位估计,快速、准确地恢复参考信号并计算终端的EVM指标,因此实现复杂度.将该算法的仿真结果与现有专业仪表的测试结果进行了比较,证明该算法耗时短,精度高,完全可以满足3G终端EVM一致性测试的需求,同时适合作为3G终端射频测试仪表的关键性算法.
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| 关 键 词： | 矢量误差幅度 一致性测试 3G终端 TD-SCDMA |
| 收稿时间： | 2005-09-07 |
| 修稿时间： | 2005年9月7日 |
The research on EVM measurement algorithm for 3G UE conformance test |
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| Jin Lei,Wang Bing,Li Chunyuan.The research on EVM measurement algorithm for 3G UE conformance test[J].High Technology Letters,2006,16(8):771-777. |
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| Authors: | Jin Lei Wang Bing Li Chunyuan |
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| Affiliation: | Wireless Technology Innovation Institute, Beijing University of Posts and Telecommunications, Beijing 100876 |
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| Abstract: | The requirements of EVM measurement in the conformance test and the limitations of traditional test algorithms were analyzed, and then a fast, precise EVM measurement algorithm based on the estimation of frequency offset and initial phase was put forward. According to the comparison between the simulation results and the measurement results acquired with the existing professional test instruments, the improved algorithm can fulfill EVM measuremens in the conformance test for 3G UE. Moreover, it is competent to be a key measurement algorithm in RF test instruments for 3G UE. |
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| Keywords: | error vector magnitude conformance test 3G UE TD-SCDMA |
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