LTE-Hi系统室内场景下256QAM性能研究

刘珊; 陶成; 刘留

doi:10.11959/j.issn.1000-0801.2016004

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LTE-Hi系统室内场景下256QAM性能研究

研究与开发 | 更新时间：2024-06-05

- LTE-Hi系统室内场景下256QAM性能研究
- Performance of 256QAM in LTE-Hi indoor scenario
- 电信科学 2016年32卷第1期页码：25-33
- 作者机构：
- 作者简介：
  
  [ "刘珊（1991-），女，北京交通大学硕士生，主要研究方向为LTE-Hi物理层关键技术。" ]
  [ "陶成（1963-），男，北京交通大学教授、博士生导师，主要研究方向为时变信道物理层信号处理、高铁无线通信系统关键技术等。" ]
  [ "刘留（1981-），男，北京交通大学副教授，主要研究方向为宽带无线信道测量与建模。" ]
- 基金信息：
  
  中央高校基本科研业务费专项资金资助项目;The Fundamental Research Funds for the Central Universities(2015JBM011)
- DOI：10.11959/j.issn.1000-0801.2016004
  中图分类号： TN929.5
- 网络出版日期：2016-01，
  
  纸质出版日期：2016-01-20
- 稿件说明：
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刘珊, 陶成, 刘留. LTE-Hi系统室内场景下256QAM性能研究[J]. 电信科学, 2016,32(1):25-33.

Shan LIU, Cheng TAO, Liu LIU. Performance of 256QAM in LTE-Hi indoor scenario[J]. Telecommunications science, 2016, 32(1): 25-33.
刘珊, 陶成, 刘留. LTE-Hi系统室内场景下256QAM性能研究[J]. 电信科学, 2016,32(1):25-33. DOI： 10.11959/j.issn.1000-0801.2016004.

Shan LIU, Cheng TAO, Liu LIU. Performance of 256QAM in LTE-Hi indoor scenario[J]. Telecommunications science, 2016, 32(1): 25-33. DOI： 10.11959/j.issn.1000-0801.2016004.

摘要

为解决室内及热点地区流量激增的问题，3GPP 标准组织在Release12（R12）中提出了LTE-Hi，由于其覆盖场景的特殊性可以考虑引入256QAM调制提升系统性能。根据标准给出的256QAM编码表，推导了一种基于判决边界的软解调算法。通过仿真LTE-Hi场景下终端SINR的分布说明256QAM的可行性，并根据针对256QAM 调制而改变的CQI/MCS/TBS 信令配置链路仿真，得到不同EVM 下256QAM 相较于64QAM 的吞吐量。最后，比较了LTE-Hi在不同室内场景中引入256QAM之后系统的性能。

Abstract

In order to solve the traffic explosion of indoor and hotspots

LTE-Hi was put forward by 3GPP organization in Release12.Due to the coverage particularity of indoor and hotspots scenarios

the organization introduced 256QAM to improve system performance.According to the 256QAM constellation given in the standard

a soft demodulation algorithm based on border distance decision was deduced.Through a simulation of the UE SINR distribution in the LTE-Hi scenario

the feasibility of the 256QAM was proved and according to the CQI/MCS/TBS signaling table changed for 256QAM

link level simulation showed the 256QAM and 64QAM throughput in comparison under different EVM index.Finally

the system performance with and without the introduction of 256QAM under different scenarios was evaluated.

关键词

Keywords

references

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