信息通信技术与政策

信息通信技术与政策

信息通信技术与政策 ›› 2019, Vol. 45 ›› Issue (3): 47-54.

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面向5G的滤波器组OFDM技术研究

Research on 5G oriented filter bank OFDM technology

  

  • 出版日期:2019-03-15 发布日期:2020-12-04
  • 作者简介:
    张长青:中国移动通信集团湖南有限公司岳阳分公司高级工程师、中科院长春物理研究所89 级理学硕士研究生,从事计算机网络和移动通信技术,发表科技文章170 篇,科技论文60 篇,申请专利14 个,编写计算机网络、移动通信及相关应用软件几十个。

  • Online:2019-03-15 Published:2020-12-04

摘要: 滤波器组OFDM技术可能是面向5G传输系统,实现其高速率、高吞吐量、高可靠和低时延等基本应用标准的最佳技术方案之一。在滤波器组OFDM系统中,除了发射端增加了综合滤波器组、接收端增加了分析滤波器组,其他架构基本与4G LTE相同,技术实现难度较低。本文通过与现实情况尽可能接近的仿真建模,利用付里叶时频变换,通过对比,分析了传统窗函数与滤波器组产生的波形在频域的能量泄漏情况,通过分析滤波器组OFDM系统的比特曲线,讨论了滤波器组OFDM系统的性能,可以为学习和了解5G系统等基础技术提供帮助。

关键词: 滤波器组, 叠加因子, 波形成形, 能量泄漏。

Abstract: Filter bank OFDM technology may be one of the best technology schemes for 5G transmission system to achieve its basic application standards such as high speed, high throughput, high reliability and low delay. In the filter bank OFDM system, besides the integrated filter banks at the transmitter and the analysis filter banks at the receiver, the other architectures are basically the same as the 4GLTE, and the technical implementation is relatively difficult. In this paper, the energy leakage of waveforms generated by traditional window functions and filter banks in frequency domain is analyzed by using Fourier time-frequency transform and simulation modeling as close as possible to the reality. The performance of filter banks OFDM system is discussed by analyzing the bit curve of filter banks OFDM system. Learn and understand basic technology such as 5G system to help.

Key words: filter banks, stacking factors, waveform forming and energy leakage