Transmission Rate Analysis of Multicell Downlink 3D MIMO System

WANG Meng-yun; YIN Cheng-qun; ZHAO Wei

doi:10.13756/j.gtxyj.2016.06.020

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Transmission Rate Analysis of Multicell Downlink 3D MIMO System

- Transmission Rate Analysis of Multicell Downlink 3D MIMO System
- Study on Optical communication Issue 6, Pages: 72-75(2016)
- 作者机构：
  
  华北电力大学电子与通信工程系
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2016.06.020
  CLC： TN919.3
- Published：2016，
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[1]王梦云,尹成群,赵伟.多小区下行3D MIMO系统的传输速率分析[J].光通信研究,2016(06):72-75.

WANG Meng-yun, YIN Cheng-qun, ZHAO Wei. Transmission Rate Analysis of Multicell Downlink 3D MIMO System. [J]. (6):72-75(2016)
[1]王梦云,尹成群,赵伟.多小区下行3D MIMO系统的传输速率分析[J].光通信研究,2016(06):72-75. DOI： 10.13756/j.gtxyj.2016.06.020.

WANG Meng-yun, YIN Cheng-qun, ZHAO Wei. Transmission Rate Analysis of Multicell Downlink 3D MIMO System. [J]. (6):72-75(2016) DOI： 10.13756/j.gtxyj.2016.06.020.

摘要

针对传统MIMO（多输入多输出）系统容量受限的问题

引入3D（三维）MIMO系统模型

将多小区联合传输技术应用于3D MIMO系统以提高系统容量。结合香农理论推导出采用单小区传输和多小区联合传输时的信干噪比

采用简单易实现的迫零预编码算法

分析了基站天线下倾角、用户与基站之间的距离以及小区中的用户数对系统传输速率的影响。仿真结果表明

适当调整基站天线下倾角可以提高系统传输速率

验证了采用多小区联合传输比单小区传输在提高系统传输速率方面具有更优的性能。

Abstract

In order to solve the problem of limited capacity in traditional MIMO system

the 3D MIMO system model is introduced in this paper.The multicell coordinated transmission technology is applied to the 3D MIMO system to improve the system capacity.According to the Shannon theory

we derive the expression of signal to interference plus noise ratio in single-cell transmission and multi-cell joint transmission

respectively.Then we adopt the Zero Forcing（ZF）precoding algorithm

and analyze theinfluences of the base station antenna down tilt

the distance between the user and the base station

the number of users for the system transmission rate.Simulation results show that appropriate adjustments to the base station antenna tilt can improve the transmission rate of the system.It is also verified the multicell coordinated transmission has better performance in increasing the throughput of the system

whencompared to the single-cell transmission.

关键词

三维多输入多输出传输速率联合传输迫零预编码

Keywords

3D MIMOtransmission ratecoordinated transmissionZF precoding

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