多径信道下UFMC系统的信道估计

余翔; 高燕妮; 段思睿

doi:10.11959/j.issn.1000-0801.2018113

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多径信道下UFMC系统的信道估计

研究与开发 | 更新时间：2024-06-05

- 多径信道下UFMC系统的信道估计
- Channel estimation of UFMC system in multipath channel
- 电信科学 2018年34卷第4期页码：22-30
- 作者机构：
- 作者简介：
  
  [ "余翔（1969-），男，重庆邮电大学院教授，主要研究方向为通信网及交换技术、计算机网络及信息安全和下一代网络技术。" ]
  [ "高燕妮（1993-），女，重庆邮电大学硕士生，主要研究方向为无线通信技术。" ]
  [ "段思睿（1986-），男，重庆邮电大学副教授，主要研究方向为无线通信中的信号处理和下一代无线通信系统的多载波传输。" ]
- 基金信息：
  
  国家科技重大专项基金资助项目;The National Science and Technology major Project(2017ZX03001004-004)
- DOI：10.11959/j.issn.1000-0801.2018113
  中图分类号： TN919
- 网络出版日期：2018-04，
  
  纸质出版日期：2018-04-20
- 稿件说明：
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余翔, 高燕妮, 段思睿. 多径信道下UFMC系统的信道估计[J]. 电信科学, 2018,34(4):22-30.

Xiang YU, Yanni GAO, Sirui DUAN. Channel estimation of UFMC system in multipath channel[J]. Telecommunications science, 2018, 34(4): 22-30.
余翔, 高燕妮, 段思睿. 多径信道下UFMC系统的信道估计[J]. 电信科学, 2018,34(4):22-30. DOI： 10.11959/j.issn.1000-0801.2018113.

Xiang YU, Yanni GAO, Sirui DUAN. Channel estimation of UFMC system in multipath channel[J]. Telecommunications science, 2018, 34(4): 22-30. DOI： 10.11959/j.issn.1000-0801.2018113.

摘要

通用滤波多载波（UFMC）技术作为5G的一种候选波形，能够抑制带外辐射、实现宽松同步并且很好地支持物联网中短的突发分组传输。但在 UFMC 传输中不加循环前缀（CP），多径衰落信道下会产生符号间干扰（ISI）以及子载波间干扰（ICI），在信道估计时会影响估计精度。首先分析了多径信道下UFMC系统接收端的干扰情况，在采用反馈均衡抑制ISI后，根据相邻载波间干扰相近的特性，采用自消除算法抑制ICI，并且根据UFMC系统设计导频系数。最后仿真对比了不同多径时延下UFMC系统与CP-OFDM系统信道估计以及误码率性能，通过仿真验证，提出的导频设计方法应用到UFMC中能够很好地抑制干扰，提高估计精度，降低误码率。

Abstract

As a candidate waveform of 5G

universal filter multi-carrier (UFMC) technology could inhibit out-of-band radiation

achieve loose synchronization and well support the short bursts of things in the transmission.However

in the UFMC transmission without cyclic prefix (CP)

inter-symbol interference (ISI) and subcarrier interference (ICI) are generated in the multipath fading channel

which will affect the estimation accuracy in channel estimation.The interference of the UFMC system in multipath channel was firstly analyzed.After using the feedback equalization suppression ISI

the self-elimination algorithm was used to suppress the ICI according to the similarity between adjacent carriers

and the pilot coefficients were designed according to the UFMC system.Finally

the simulation results show that the proposed method applied to the UFMC can suppress the interference

improve the accuracy and reduce the bit error rate.

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Keywords

references

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