北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2008, Vol. 31 ›› Issue (5): 131-134.doi: 10.13190/jbupt.200805.131.319

• 研究报告 • 上一篇    

一种多用户MIMO/OFDMA系统的资源分配和调度方案

孙锴1,2, 王莹1,2, 王坦1,2, 陈子雄1,2, 张平1,2   

  1. 1北京邮电大学 泛网无线通信教育部重点实验室, 北京 100876;
    2北京邮电大学 无线新技术研究所, 北京 100876
  • 收稿日期:2008-03-20 修回日期:1900-01-01 出版日期:2008-10-30 发布日期:2008-10-30
  • 通讯作者: 孙锴

A Radio Resource Allocation and Scheduling Scheme for 
MultiUser MIMO/OFDMA Systems

SUN Kai1,2,WANG Ying1,2,WANG Tan1,2,CHEN Zi
xiong1,2,ZHANG Ping1,2   

  1. 1Key Laboratory of Universal Wireless Communications, Ministry of Education,
    Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2Wireless Technology Innovation Institute, Beijing University of Posts and Tel
    ecommunications, Beijing 100876, China
  • Received:2008-03-20 Revised:1900-01-01 Online:2008-10-30 Published:2008-10-30
  • Contact: SUN Kai

摘要:

针对下行多用户多入多出/正交频分复用系统,提出了一种适合多业务类型的资源分配和调
度算法. 综合考虑了不同业务类型的服务质量需求,根据用户的信道条件、吞吐量和队列状
态确定调度优先级;结合用户信道的空间相关性进行用户选择、功率分配和比特加载. 通过
充分利用空、时、频多用户分集增益,在保证实时业务最小时延要求和非实时业务最小速率
要求的同时,最大化系统的吞吐量. 仿真结果说明,所提算法在系统吞吐量、丢包率及最
小速率满足率方面得到了改善.

关键词: 空分多址, 资源分配, 调度算法, 多业务, 服务质量

Abstract:

A radio resource allocation and scheduling algorithm for multiuser MIMO/OFDMA
systems is proposed to efficiently support the diverse quality of service (QoS)
requirements of heterogeneous services. Firstly, the priority is given by taking
into account QoS requirements, channel conditions, throughput, and queue state
information. Then, the user selection on the same subcarrier based on the channe
l correlation, power allocation, and bit loading are implemented. The algorithm
aims to maximize the system throughput by fully exploiting multiuser diversity
gain in space, time, and frequency domain while guaranteeing the delay requirem
ent for realtime services and minimum rate requirement for nonrealtime ser
vices. The simulation results show that the proposed algorithm improves the syst
em performance in terms of the system throughput, packet dropping probability, a
nd the ratio of unsatisfied minimum data rate of nonrealtime services.

Key words: space division multiple access, resource allocation, scheduling algorithm, heter
ogeneous traffic; quality of service

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