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虚拟MIMO技术能够有效减少信道衰落对无线链路的影响,节省无线传输时的能耗.结合MIMO多播和LEACH协议,提出新的虚拟MIMO多跳传输策略(VMMM),由于该策略避免了多跳数据转发时的簇内广播过程,从而提高整个网络的能量有效性.为优化该传输策略的性能,本文对VMMM策略的能耗进行建模分析,并在此基础上通过联合优化以确定满足最小能耗时的网络参数.仿真结果表明,与已有的虚拟MIMO多跳传输策略—vMISO协议相比,VMMM策略能够显著提高网络的能量有效性,有效延长网络生存时间达50%以上.
The virtual MIMO technology can effectively reduce the impact of channel fading on the wireless link and save the energy consumption during wireless transmission.With MIMO multicast and LEACH protocol, a new virtual MIMO multi-hop transmission strategy (VMMM) is proposed, which avoids more Hopping data forwarding in the cluster broadcast process, thereby enhancing the energy efficiency of the entire network.In order to optimize the performance of the transmission strategy, this paper VMMM strategy of energy consumption modeling and analysis, and on this basis through the joint optimization to determine the satisfaction And the minimum energy consumption.The simulation results show that compared with the existing virtual MIMO multi-hop transmission strategy-vMISO, the VMMM strategy can significantly improve the energy efficiency of the network and effectively prolong the network lifetime by more than 50%.