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| 基于部分协作的多小区下行MIMO鲁棒双层预编码算法 | |
| 引用本文： | 蓝贤桂,曹杰,廖勇. 基于部分协作的多小区下行MIMO鲁棒双层预编码算法[J]. 北京邮电大学学报, 2018, 41(2): 92-96. DOI: 10.13190/j.jbupt.2017-044 |
| 作者姓名： | 蓝贤桂 曹杰 廖勇 |
| 作者单位： | 1. 东华理工大学 机械与电子工程学院, 南昌 330013; 2. 重庆大学 通信与测控中心, 重庆 400044 |
| 基金项目： | 国家自然科学基金项目(61501066)，重庆市基础与前沿计划基金项目(cstc2015jcyjA40003)，四川省应用基础研究计划基金项目(2016JY0179)，重庆大学中央高校基本科研业务费项目(106112017CDJXY500001) |
| 摘 要： | 针对多小区协作多入多出（MIMO）系统中存在的信道状态信息（CSI）反馈回传过多的问题，提出了多小区部分协作MIMO系统预编码算法.首先建立了包含信道估计、量化和延时误差的联合误差模型，然后根据此信道误差模型，利用迫零和信漏噪比算法思想，提出一种多小区部分协作下的双层MIMO鲁棒预编码算法.数值分析及仿真结果表明，所提算法相比传统的多小区协作下行MIMO系统预编码算法，用户的误码率性能和系统和速率稍差，但在CSI反馈比特方面有一定优势. |
| 关 键 词： | 多小区 多入多出 部分协作 预编码 |
| 收稿时间： | 2017-04-06 |
Robust Double-Layer Precoding Algorithm for Multi-Cell Downlink MIMO Based on Partial Collaboration |
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| LAN Xian-gui,CAO Jie,LIAO Yong. Robust Double-Layer Precoding Algorithm for Multi-Cell Downlink MIMO Based on Partial Collaboration[J]. Journal of Beijing University of Posts and Telecommunications, 2018, 41(2): 92-96. DOI: 10.13190/j.jbupt.2017-044 | |
| Authors: | LAN Xian-gui CAO Jie LIAO Yong |
| Affiliation: | 1. School of Mchanical and Electronic Engineering, East China University of Technology, Nanchang 330013, China; 2. Center of Communication and TT & C, Ministry of Education, Chongqing University, Chongqing 400044, China |
| Abstract: | In order to reduce the feedback bits of channel state information (CSI) in multi-cell cooperative multiple input multiple output (MIMO) system, a multi-cell partial cooperative MIMO precoding algorithm is proposed. Firstly, a joint channel error model including channel estimation error, quantization error and delay error, is established. Then, by using zero forcing and signal to leakage and interference ratio, a double-layer MIMO robust precoding algorithm is proposed. Numerical analysis and simulation results show that, compared with the traditional multi-cell MIMO system precoding algorithms, the bit error rate and the sum rate capacity are slightly worse, but the proposed algorithm has great advantage in CSI feedback bits. |
| Keywords: | multi-cell multiple input multiple output partial cooperative precoding |
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