| 两跳MIMO级联中继网络自由度研究 |
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| 引用本文： | 王寅君,刘锋,曾连荪.两跳MIMO级联中继网络自由度研究[J].国外电子元器件,2014(10):104-107. |
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| 作者姓名： | 王寅君 刘锋 曾连荪 |
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| 作者单位： | 上海海事大学信息工程学院,上海201306 |
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| 基金项目： | 基金项目：国家自然科学基金项目（61271283）;上海海事大学科研基金项目（20120107）;上海市教委科研创新项目（14YZ113） |
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| 摘 要： | 未来移动通信系统的发展和演进涉及的两个基本方面是提高系统的吞吐量和覆盖率,为了实现这两个目标,多输入多输出(MIMO)中继技术成为主流的解决办法。因此模拟现实情况,使用了TDD模式下的由源节点、中继节点、目的节点组成的两跳MIMO级联中继网络模型。采用改进的最大流-最小割定理方法得到中继网络的该模型自由度的上界;采用解码-转发与迫零信号处理得到了该模型自由度的下界。最后得到各对应情况下自由度下界与上界相等的结论,且其自由度均为天线数的函数。
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| 关 键 词： | 多输入多输出(MIMO) 级联中继 两跳 自由度 |
Degree of freedom for the two-hop cascaded MIMO relay networks |
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| WANG Yin-jun,LIU Feng,ZENG Lian-sun.Degree of freedom for the two-hop cascaded MIMO relay networks[J].International Electronic Elements,2014(10):104-107. |
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| Authors: | WANG Yin-jun LIU Feng ZENG Lian-sun |
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| Affiliation: | (College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China) |
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| Abstract: | The MIMO relay networks will be used as a main solution to improve the throughput and the coverage of a network in the future. In order to simulate the real situation, we consider a two-hop cascaded MIMO relay network composed of a source node, a relay node and a destination node which works under time -division-duplex（TDD） mode. The upper bound is obtained by using the modified max-flow rain-cut theorem and the lower bound is gotten by using decode-forward and zero-forcing approach. We can conclude that the upper bound of the DoF equals to the lower bound of the DoF through some demonstration and we also get a conclusion that the DoF is a function of antennas. |
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| Keywords: | Multiple-Input Muhiple-Output（MIMO） cascaded relay two-hop Degree of Freedom（DoF） |
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