多跳Ad Hoc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  

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

作　　者：张光辉[1] 李建东[1] 赵敏[2] 陈艳羽[3] 李长乐[1] 

机构地区：[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

出　　处：《电子学报》2006年第10期1763-1767,共5页Acta Electronica Sinica

基　　金：高等学校博士学科点专项科研基金(No.20050701007);国家自然科学基金和微软亚洲研究院联合项目(No.60372048);国家自然科学基金重大项目(No.60496316);国家"863"课题认知无线电技术研究项目(No.2005AA123910);高等学校优秀青年教师教学科研奖励计划项目;教育部科学技术研究重点项目(No.104171)

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.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.

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 

分 类 号：TN915.4[电子电信—通信与信息系统]