MIMO双向中继网络的预编码设计与功控策略

杨鼎成; 肖霖; 刘圣恩

doi:10.3969/j.issn.0258-2724.2013.06.019

MIMO双向中继网络的预编码设计与功控策略

doi: 10.3969/j.issn.0258-2724.2013.06.019

基金项目:

国家自然科学基金资助项目（61250005）

江西省科技厅自然科学基金资助项目（20122BAB2111015，20132BAB211035）

教育部归国留学基金资助项目（第45批次）

江西省教育厅基金资助项目（GJJ13007）

中国博士后科学基金第54批面上资助项目（2013M541875）

详细信息

作者简介:
杨鼎成（1985-），男，博士，副教授，研究方向为协作通信及多天线技术，E-mail：yangdingcheng@ncu.edu.cn

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- 文章访问数: 963
- HTML全文浏览量: 64
- PDF下载量: 310
- 被引次数: 0
出版历程
- 收稿日期: 2013-05-06
- 刊出日期: 2013-12-25

Joint Precoding Design and Power Control in MIMO Two-Way Relay Network

摘要

摘要: 为加强MIMO双向中继系统的空间复用增益，研究一种低复杂度的发送和接收预编码矩阵.利用子空间对齐方法，将双向MIMO信道分解为多路单入单出（SISO）的子信道形式，使得两个源用户能够使用网络编码获取更好的空间复用增益.同时通过矩阵计算和转化，给出了一种优化的功率分配方案.在确定优化矩阵后，该方案能够为每个子信道独立地进行优化功率分配，并且能够得到各节点间优化功率分配的闭合表达式，从而将算法复杂度从O（n3）降低为O（n）.仿真结果表明，在典型场景下，所提方案在具有更低复杂度的优势下，系统性能接近优化的梯度下降迭代方案，优于传统单纯前向放大转发方式（AF），有2.99 bit/（sHz）的性能增益.
- 多输入多输出系统 /
- 网络编码 /
- 双向中继 /
- 预编码设计 /
- 功率控制 /
- 凸优化
Abstract: In order to enhance spatial multiplexing gain of multiple input multiple output (MIMO) two-way relay networks, the transceiver precoding matrixes for all nodes with low complexity were investigated. Using subspace alignment scheme, the bi-directional MIMO channel can be decoupled into several single input single output (SISO) sub-channels. It is accessible for source nodes to use network coding to obtain better spatial multiplexing gain. By calculating and transforming the matrices, an optimal power control method for MIMO two-way relay network was presented. This method can independently optimize each sub-channel power allocation with the fixed precoding matrix. Moreover, a closed-form solution for power allocation among relay nodes and users is derived which considerable decreases the complexity from O(n3) to O(n). Simulation results show that the performance of the proposed approach is close to the iterative gradient descent solution and outperform the traditional pure amplify-and-forward (AF) two-way mode 2.99 bit/(sHz) gains with less computational load in typical scenarios.
- MIMO systems /
- network coding /
- two-way relay /
- precoding design /
- power control /
- convex optimization

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参考文献(30)

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文章访问数: 963
HTML全文浏览量: 64
PDF下载量: 310
被引次数: 0

MIMO双向中继网络的预编码设计与功控策略

doi: 10.3969/j.issn.0258-2724.2013.06.019

作者简介: 杨鼎成（1985-），男，博士，副教授，研究方向为协作通信及多天线技术，E-mail：yangdingcheng@ncu.edu.cn

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出版历程

Joint Precoding Design and Power Control in MIMO Two-Way Relay Network

计量

出版历程

目录

作者简介:
杨鼎成（1985-），男，博士，副教授，研究方向为协作通信及多天线技术，E-mail：yangdingcheng@ncu.edu.cn