LTE-M车地无线通信系统中的自适应调制编码技术
Adaptive modulation coding technology in LTE-M Train-Ground wireless communication sysytem
冯琳1
作者信息
- 1. 武汉交通职业学院电子与信息工程学院,湖北武汉 430065
- 折叠
摘要
城市轨道交通车地综合通信(LTE-M)系统在通信环境、业务需求等方面与公共无线通信系统有较大的差异.传统的调制编码技术已无法满足系统性能要求.文章针对LTE-M应用场景的特殊性,提出了一种AMC技术的优化方案.经过测试证明,该方案解决了由于信号质量变化太快以及信号频繁抖动所带来的调制编码等级不准确问题,保证了在切换过程中的丢包率以及时延,大大提高了切换过程中的性能指标.
Abstract
Train-Ground wireless communication LTE sysytem is different from the public wire-less communication system in terms of communication environment and service requirements.The traditional modulation coding technology can not meet the performance requirements.In view of the particularity of LTE-M application scenarios,this paper proposes an optimization scheme of AMC technology.The test results show that the scheme solves the problem of inaccu-rate MCS caused by too fast signal quality change and frequent signal jitter,It ensures the packet loss rate and delay during the handover process,and greatly improves the performance indicators during the handover process.
关键词
自适应调制编码/LTE-M/调制编码方式Key words
Adaptive modulation coding/LTE-M system/Modulation and Coding Scheme引用本文复制引用
出版年
2024
NETL
NSTL
万方数据