计算机工程与应用 ›› 2012, Vol. 48 ›› Issue (22): 104-108.

• 网络、通信、安全 • 上一篇    下一篇

LTE系统级仿真建模实现及其优化

何金薇,丁  璐,刘志敏   

  1. 北京大学 信息科学技术学院,北京 100871
  • 出版日期:2012-08-01 发布日期:2012-08-06

Realization and optimization of LTE system-level simulation platform

HE Jinwei, DING Lu, LIU Zhimin   

  1. School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
  • Online:2012-08-01 Published:2012-08-06

摘要: 长期演进(LTE)作为下一代移动通信系统,其整体性能需要在系统级仿真中评估。LTE系统的设计、建模以及实现方法对仿真平台的有效性有直接影响,而目前功能较全的平台一般仿真速度较慢,针对这一问题,给出了LTE系统级仿真平台建模框架,并利用CPU多核以及OpenMP并行计算技术,对平台中耗时较多的模块进行优化,显著地提高了系统的仿真效率。通过比较不同的调度算法评估了仿真平台的性能。该系统级仿真平台达到了3GPP对系统设计的要求,为LTE-Advanced的标准化工作奠定了基础。

关键词: 长期演进(LTE), 系统级仿真, 分组调度, 并行计算

Abstract: According to the technical documentation of the 3GPP, a system level simulation platform for Long Term Evolution(LTE) is constructed using Visual Studio 2010, which includes large/small scale fading, system level to link level mapping, Wrap-around network topology, adaptive modulation and coding, HARQ and packet scheduling models. Multi-core CPU and OpenMP parallel programming is designed to improve the simulation efficiency. Simulation results show that the system performance is coincident with the 3GPP LTE standardization.

Key words: Long Term Evolution(LTE), system-level simulation, packet scheduling, parallel programming