| 双层异构网络下多用户干扰对齐算法 |
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| 引用本文： | 杨敬文,李莉,邱昊.双层异构网络下多用户干扰对齐算法[J].上海师范大学学报(自然科学版),2016,45(2):150-154. |
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| 作者姓名： | 杨敬文 李莉 邱昊 |
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| 作者单位： | 上海师范大学,上海师范大学,上海师范大学 |
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| 基金项目： | 国家自然科学基金项目(61503251) |
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| 摘 要： | 针对多个毫微微蜂窝网络与宏蜂窝网络共存的网络环境,基于干扰对齐技术,提出了一种双层预编码方案,首先定义宏蜂窝网络对毫微微蜂窝网络造成的干扰为跨层干扰,毫微微蜂窝网络之间的干扰为同层干扰,分别对毫微微蜂窝用户和宏蜂窝用户进行预编码,宏蜂窝用户的预编码使得跨层干扰最小,使之可比拟于背景噪声,毫微微蜂窝用户的预编码与毫微微蜂窝基站的后置编码进行迭代,以最小均方误差(MMSE)准则输出,仿真结果表明所提算法使得毫微微蜂窝网络的吞吐量相较于单层MMSE算法在信噪比为0~30 d B区间内平均提高了3 bps/Hz.
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| 关 键 词： | 干扰对齐 双层异构网络 毫微微蜂窝 最小均方误差 |
| 收稿时间： | 2016/1/6 0:00:00 |
Multiple-users interference alignment base on two-tired heterogeneous networks |
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| YANG Jingwen,LI li and QIU Hao.Multiple-users interference alignment base on two-tired heterogeneous networks[J].Journal of Shanghai Normal University(Natural Sciences),2016,45(2):150-154. |
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| Authors: | YANG Jingwen LI li and QIU Hao |
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| Affiliation: | College of Information,Mechanical and Electrical Engineering,Shanghai Normal University,College of Information,Mechanical and Electrical Engineering,Shanghai Normal University and College of Information,Mechanical and Electrical Engineering,Shanghai Normal University |
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| Abstract: | Interference alignment is a novel interference alignment way,which is popular in interference management of two-tiered heterogeneous networks.Based Interference alignment technique,a two level precoding scheme has been presented to solve the interference in the case of muti-femtocell network coexist with macrocell network.First we define co-layer interference as the interference between femtocell and femtocell,correspondingly,we define cross-layer interference as the interference between macrocell and femtocell,and use precoders at macrocell users and femtocell users respectively.The precoders of macrocell users minimize the cross-layer interference,and output of iteration between precoders of femtocell users and post code of base station bases on mean square error minimization algorithm,which would be used to handle co-layer interference,thus it will reduce interference of femtocell at last and ensure the QoS of femtocell users. |
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| Keywords: | interference alignment two-tiered heterogeneous networks femtocell MMSE |
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