广义频分复用通信系统抑制干扰技术

doi:10.16183/j.cnki.jsjtu.2017.09.015

上海交通大学学报（自然版） ›› 2017, Vol. 51 ›› Issue (9): 1117-1123.doi: 10.16183/j.cnki.jsjtu.2017.09.015

广义频分复用通信系统抑制干扰技术

吴虹，刘兵，赵迎新，王冲，张钰婷 ,唐然，马肖旭，徐锡燕，穆巍炜，刘之洋

南开大学电子信息与光学工程学院，天津 300350；
天津市光电传感器与传感网络技术重点实验室，天津 300350

出版日期:2017-09-20 发布日期:2017-09-20
基金资助:
国家自然科学基金（61571244, 61501262），天津市科技计划（16YFZCSF00540，15JCYBJC51600）资助项目

Research on Interference Suppression in
Generalized Frequency Division Multiplex System

WU Hong,LIU Bing,ZHAO Yingxin,WANG Chong,ZHANG Yuting TANG Ran,MA Xiaoxu,XU Xiyan,MU Weiwei,LIU Zhiyang

College of Electronic and Optical Engineering, Nankai University, Tianjin 300350, China; Tianjin
Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Tianjin 300350, China

Online:2017-09-20 Published:2017-09-20
Supported by:

摘要/Abstract

摘要： 针对采用GFDM(Generalized Frequency Division Multiplex)多载波调制的移动通信系统中，非正交性引起的ICI(Inter Carrier Interference)、OOBE(Out of Band Emission)问题，以及在衰落信道条件下存在的时域、频域选择性衰落问题，提出了根据干扰信号能量预估值来调整原型滤波器参数以降低干扰的方法.在此基础上，采用结合了压缩感知的低复杂度预编码算法，在降低计算复杂度的同时能进一步提高频谱效率.使用Matlab软件搭建模型验证上述方法，仿真结果表明，采用上述降低干扰的方法可以将GFDM系统BER(Bit Error Rate)控制在较低水平.

关键词: , 广义频分复用, 载波干扰, 带外辐射, 计算复杂度

Abstract: The disturbances such as: ICI(Inter Carrier Interference), OOBE(Out of Band Emission), etc. in GFDM(Generalized Frequency Division Multiplex) multicarrier modulation communication system may degrade system performance, and timefrequency dualselective fading will worsen this issue. A channel estimation algorithm is introduced to lower the system’s interferences and computational complexity, by optimizing the prototype filter parameters according to disturb signal energy. Precode and equilibrium are also chosen to suppress ICI, OOBE, and interference from other users or antennas. A simulation model by Matlab is set up, BER curves and constellation diagrams have been worked out to evaluate the system performances. The simulation result indicates that GFDM with those corrective actions may get a lower BER level.

Key words: generalized frequency division multiplex (GFDM), inter carrier interference (ICI), out of band emission (OOBE), computational complexity

中图分类号:

TN 929.5

吴虹，刘兵，赵迎新，王冲，张钰婷,唐然，马肖旭，徐锡燕，穆巍炜，刘之洋. 广义频分复用通信系统抑制干扰技术[J]. 上海交通大学学报（自然版）, 2017, 51(9): 1117-1123.

WU Hong,LIU Bing,ZHAO Yingxin,WANG Chong,ZHANG Yuting TANG Ran,MA Xiaoxu,XU Xiyan,MU Weiwei,LIU Zhiyang. Research on Interference Suppression in
Generalized Frequency Division Multiplex System[J]. Journal of Shanghai Jiaotong University, 2017, 51(9): 1117-1123.

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广义频分复用通信系统抑制干扰技术

Research on Interference Suppression in
Generalized Frequency Division Multiplex System

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Research on Interference Suppression in
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