| LTE系统中多速率采样滤波器的设计 |
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| 引用本文： | 陈娜,郑建宏,冯侨.LTE系统中多速率采样滤波器的设计[J].数字通信,2010,37(1):85-89. |
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| 作者姓名： | 陈娜 郑建宏 冯侨 |
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| 作者单位： | 1. 重庆邮电大学,信科股份有限公司3G研究院,重庆,400065
2. 重庆邮电大学,移动通信工程研究中心,重庆,400065 |
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| 摘 要： | 在LTE（long term evolution）系统中对OFDM基带信号采样进行数字化处理时，随着系统带宽变化，采样速率也随之变化，但是根据协议，发送端采样速率固定，此时需要对信号进行过采样。通过对滤波器的分析比较以及仿真设计，得出结论，LTE系统中可以使用半带滤波器实现信号的过采样。
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| 关 键 词： | 多速率采样 信号内插 级联积分梳状滤波器 半带滤波器 |
Design of multi-rate sampling filter in LTE system |
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| CHEN Na,ZHENG Jian-hong,FENG Qiao.Design of multi-rate sampling filter in LTE system[J].Digital Communication,2010,37(1):85-89. |
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| Authors: | CHEN Na ZHENG Jian-hong FENG Qiao |
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| Institution: | CHEN Na1,ZHENG Jian-hong2,FENG Qiao1(1.3G Research Institute of Chongyou Information , Technology Co.,LTD.,Chongqing University of Posts , Telecommunications,Chongqing 400065,P.R.China,2.Research Center of Mobile Communication Technology,P.R.China) |
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| Abstract: | When dealing with the OFDM baseband signal in the long term evolution(LTE) system,the sampling rate changes with the variety of system bandwidth.However,according to the specification in 3GPP,the sampling rate is fixed at the transmitter,and the signal should be over-sampled.This paper analyzes and compares some multi-rate sampling filters and gets the conclusion that half band filter is a suitable multi-rate sampling filter in the LTE system. |
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| Keywords: | multi-rate sampling signal interpolation cascaded integrator comb filter half band filter |
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