电子学报 ›› 2006, Vol. 34 ›› Issue (10): 1763-1767.

• 论文 • 上一篇    下一篇

多跳AdHoc网络中支持MIMO的分布式拓扑未知时分多址接入协议的研究与分析

张光辉1, 李建东1, 赵 敏2, 陈艳羽3, 李长乐1   

  1. 1. 西安电子科技大学ISN国家重点实验室,信息科学研究所宽带无线通信实验室,陕西西安 710071;2. 吉林大学,吉林长春 130012;3. 东北师范大学,吉林长春 130012
  • 收稿日期:2005-09-27 修回日期:2006-01-24 出版日期:2006-10-25 发布日期:2006-10-25

Study and Analysis of Distributed Topology-Transparent Schedule for Time Division Multiple Access with MIMO Links in Multihop Ad Hoc Networks

ZHANG Guang-hui1, LI Jian-dong1, ZHAO Min2, CHEN Yan-yu3, LI Chang-le1   

  1. 1. State Key Lab.of Integrated Service Network,Information Science Institute,Lab.of Broadband Wireless Communications,Xidian University,Xi’an,Shaanxi 710071,China;2. Jilin University,Changchun,Jilin 130012,China;3. Northeast Normal University,Changchun,Jilin 130012,China
  • Received:2005-09-27 Revised:2006-01-24 Online:2006-10-25 Published:2006-10-25

摘要: 针对Ad Hoc网络和MIMO的有效结合,提出了适于多跳Ad Hoc网络的支持MIMO的分布式拓扑未知时分多址接入协议.该协议通过有限域无线网络设计算法在每帧给每个节点分配时隙且无需知道全网拓扑信息,这极大地减小了收集全网拓扑信息的开销.通过预约,每个节点在其分配的无干扰时隙并行发送MIMO链路的所有数据流,并在与其他节点共享的时隙发送MIMO链路的一部份数据流来解决传输冲突.同时推导出保证通过率和最佳帧长.结果显示动态分配MIMO的传输容量和抗干扰能力会极大地提高通过率.

关键词: 时分多址接入, 多输入多输出, 多跳ad hoc网络, 拓扑未知

Abstract: To effectively combine ad hoc networks with multiple input multiple output (MIMO),distributed topology-transparent schedule for time division multiple access (TDMA) protocol with MIMO links in multihop ad hoc networks is proposed.By Galois Radio Network Design (GRAND),the protocol assigns each node slots in each frame and need not know the whole network topology information,thus the overhead to collect topology information is greatly reduced.By reservation each node simultaneously transmits all data streams in the MIMO link in its assigned interference-free slots and utilizes its shared slots with other nodes to transmit a part of all data streams in the MIMO link to resolve collisions.The guaranteed throughput and optimal frame length are also derived.Results show that the network throughput will be improved greatly by dynamically allocating MIMO transmission capacity and its anti-interference ability.

Key words: time division multiple access(TDMA), multiple input multiple output(MIMO), multihop ad hoc networks, topology-transparent

中图分类号: