【作者】 易里安； 刘静； 钱良； 张海滨；

【Author】 YI Li-an~(1,2,3),LIU Jing~(1,2,3),QIAN Liang~(1,3),ZHANG Hai-bin~(1,3) ~1 Institute of Wireless Communication Technology,Shanghai Jiao Tong University,Shanghai,200240,China; ~2 State Key Laboratory of Integrated Service Networks,Xidian University,Xi’an,Shaanxi,710071,China; ~3 Shanghai Key Laboratory of Digital Media Processing and Transmissions,Shanghai,200240,China

【机构】 上海交通大学无线通信技术研究所； 西安电子科技大学综合业务网国家重点实验室； 上海市数字媒体处理与传输重点实验室；

【摘要】 在无线传感器网络(WSN)中使用虚拟MIMO技术,协同伙伴的选择是一个重要问题。本文提出了提高公平性的虚拟MIMO传输策略。采用协同空时分组编码技术进行传输,并通过节点各自的计数器记录参与协同的程度。同时通过阈值控制是否需要进行协同。仿真结果表明,该传输策略提高了协同伙伴选择的公平性,使得网络负载分布更均匀,同时延长了网络工作时间,显著改善网络性能。更多还原

【Abstract】 The selection of cooperative partner is a key problem in virtual MIMO of wireless sensor networks.This paper presents a new scheme for enhance the fairness in virtual MIMO system.The transmission used by cooperative space time block coding.Each node uses own oounter to record the extent of its participation in cooperative and a threshold is used to decide whether to cooperate. Simulation results show that this scheme is able to enhance the fairness in selection of cooperative partner,balance the distribution of network loads,extend the life time of networks and improve the performance of networks significantly.更多还原