Tao Yang
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MIMO and beamforming

       单天线的电磁辐射特性为全向。多天线组成的阵列,通过对各个振源的相位/时延的控制,实现了波束成形(beamforming),见下图。天线阵列的元素数目越大,波束的能量增益越大,波束越窄。

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        除了波束成形带来的能量增益以外,多天线阵列缔造了一个“空域”维度,获得了与时、频自由度并列的空域自由度(d.o.f.)。这使得多输入多输出(multiple-input multiple-output)系统可以获得数倍/数十倍于单输入单输出系统的频谱效率。

        5G移动通信系统在sub-6G频段采用了中大规模MIMO:基站配备64-256振源的天线阵列,用空分多址(spatial division multiple access)同时服务十几个用户的数据流。因为用户数目K远小于天线数目N,简单的迫零MIMO检测/预编码即可保证系统顺利工作。

        6G系统将面对显著增加的设备数目,即K将显著增加,达到甚至超过N。届时,已有的线性MIMO检测/预编码受限于其落后的干扰处理理念,将远远无法满足性能要求。课题组提出的基于格码的多址(LCMA)为解决这一为题提供了一个有竞争力的方案。

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Personal information

Associate Professor
Supervisor of Master's Candidates

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Date of Employment:2018-12-14

School/Department:School of Electronics Information Engineering

Administrative Position:Associate Professor

Education Level:博士研究生

Business Address:New Main building F929

Gender:Male

Contact Information:Wechat: 35771385 Email: Tyang@buaa.edu.cn

Degree:Doctoral Degree in Engineering

Status:Employed

Academic Titles:Core Member of Future Communication and Networking Promotion Group

Other Post:未来通信与网络推进组成员

Alma Mater:Beihang University, New South Wales University

Discipline:Information and Communication Engineering

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Honors and Titles:

Australian Research Council Discovery Early Career Researcher Award  2015

联邦科学研究院优秀论文奖  2013

澳大利亚国家研究生奖  2010

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