欢迎访问中国科学院大学学报,今天是

中国科学院大学学报 ›› 2014, Vol. 31 ›› Issue (4): 543-547.DOI: 10.7523/j.issn.2095-6134.2014.04.015

• 信息与电子科学 • 上一篇    下一篇

具有时延约束的功率分配技术

彭喆, 卢汉成, 洪佩琳   

  1. 中国科学技术大学电子工程与信息科学系信息网络实验室, 合肥 230027
  • 收稿日期:2013-01-25 修回日期:2013-06-28 发布日期:2014-07-15
  • 通讯作者: 彭喆,E-mail:pengzhe@mail.ustc.edu.cn
  • 基金资助:

    国家自然科学基金(61170231)资助

Power allocation scheme for delay-constrained communication

PENG Zhe, LU Hancheng, HONG Peilin   

  1. Information Network Lab of EEIS Department, University of Science and Technology of China, Hefei 230027, China
  • Received:2013-01-25 Revised:2013-06-28 Published:2014-07-15

摘要:

综合考虑业务时延敏感特性和信道质量,给出时变信道下多用户系统有效容量表达式,提出基于有效容量的多用户功率分配算法(MPAS). 仿真结果表明,与最大化吞吐量为目标的注水算法和用户功率分配次优算法相比,MPAS能够获得10%~20%的有效容量增益,有效地满足业务的时延要求.

关键词: 有效容量, 功率分配, 时延约束, 多用户

Abstract:

This paper focuses on the power allocation scheme for delay-constrained communication with delay requirements and time-varying channels. We formulate the effective capacity of the multi-user system for time-varying channel and propose the multiuser power allocation scheme (MPAS) based on effective capacity. Simulation results show that MPAS achieves 10%~20% effective capacity gain over the water-filling algorithm aimed at throughput maximization as well as the suboptimum power allocation algorithm.

Key words: effective capacity, power allocation, delay-constrained, multi-user

中图分类号: