| 基于树搜索算法的多用户MIMO系统的自由度分配 |
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| 引用本文： | 高慧,朱谦.基于树搜索算法的多用户MIMO系统的自由度分配[J].微型电脑应用,2014(3):38-40. |
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| 作者姓名： | 高慧 朱谦 |
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| 作者单位： | 复旦大学通信系,上海200433 |
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| 摘 要： | 针对最大化多用户MIMO系统的和速率的问题,提出了将迭代式干扰对齐技术（Iterative Interference Alignment：ⅡA）和系统自由度（DoF）分配策略相结合的一种算法.系统的DoF分配是通过树搜索算法（Tree search）来实现的.理论分析及实验仿真结果表明,该算法获得的系统容量,接近遍历法（exhausting search：EX）的结果,但是在算法复杂性及收敛时间上明显优于遍历法.
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| 关 键 词： | 多用户MIMO系统 迭代式干扰对齐 树搜索算法 自由度分配 和速率 |
Degrees of Freedom Allocation for Multi-user MIMO System Based on Tree Search Algorithm |
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| Gao Hui,Zhu Qian.Degrees of Freedom Allocation for Multi-user MIMO System Based on Tree Search Algorithm[J].Microcomputer Applications,2014(3):38-40. |
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| Authors: | Gao Hui Zhu Qian |
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| Affiliation: | (School of Information Science and Technology Fudan University, Shanghai 200433,China) |
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| Abstract: | Considering the problem that maximizing the sum rate of multi-user MIMO system, an algorithm that joints iterative interference alignment and allocation strategies of degrees of freedom （DoF） is proposed in this paper. DoF allocation of multi-user MIMO system is achieved via Tree Search algorithm. Theoretical analysis and simulation results show that the proposed Tree Search algorithm achieves sum rate performance near that of the exhausting search （EX） asymptotically, while the Tree Search algorithm has lower computation complexity and less convergence time. |
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| Keywords: | Multi-User MIMO System Iterative Interference Alignment （IIA） Tree Search Algorithm Degrees Of FreedomAllocation Sum Rate |
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