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1. 北方工业大学信息工程学院 北京 100144
2. 北京邮电大学信息与通信工程学院 北京 100876
[ "白文乐,男,博士,北方工业大学副教授、硕士生导师,主要研究方向为移动通信关键技术及无线通信网络。" ]
[ "王旭,男,北方工业大学硕士生,主要研究方向为移动通信。" ]
[ "张永梅,女,博士,北方工业大学教授、硕士生导师,主要研究方向为无线通信信号与信息处理。" ]
[ "彭木根,男,北京邮电大学教授、博士生导师,主要研究方向为未来无线网络理论及技术研究。" ]
网络出版日期:2015-01,
纸质出版日期:2015-01-20
移动端阅览
白文乐, 王旭, 张永梅, 等. 一种改进的TD-LTE下行定时同步算法[J]. 电信科学, 2015,31(1):72-76.
Wenle Bai, Xu Wang, Yongmei Zhang, et al. An Improved Algorithm for TD-LTE Downlink Time Synchronization[J]. Telecommunications science, 2015, 31(1): 72-76.
白文乐, 王旭, 张永梅, 等. 一种改进的TD-LTE下行定时同步算法[J]. 电信科学, 2015,31(1):72-76. DOI: 10.11959/j.issn.1000-0801.2015030.
Wenle Bai, Xu Wang, Yongmei Zhang, et al. An Improved Algorithm for TD-LTE Downlink Time Synchronization[J]. Telecommunications science, 2015, 31(1): 72-76. DOI: 10.11959/j.issn.1000-0801.2015030.
针对正交频分复用定时同步实际应用问题,利用循环前缀的统计能量差和统计相关特性,提出了一种改进的TD-LTE下行定时同步算法,减小了计算复杂度,同时能检测循环前缀类型。仿真结果表明,算法在多径衰落信道下,特别是小信噪比条件下,定时同步性能优越,并对归一化频偏和多普勒频移变化具有较强的适应能力。
Aimed at the application problem of timing synchronization algorithm in orthogonal frequency division multiplexing system
an improved algorithm for TD-LTE downlink time synchronization was proposed. It utilizes statistical energy difference and correlation of cyclic prefix to improve the system performance
which reduces the computational complexity
and can detect the cyclic prefix types. The simulation results demonstrate that the performance of the new method is excellent in multi-path fading channels
especially in the case of small SNR. And it is robust against the normalized frequency offset and Doppler shift.
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