结合速率自适应的虚拟MIMO传感网络跨层优化

Cross-layer Optimization in Virtual MIMO Sensor Networks with Rate Adaptation

由于无线传感网络能量受限性,该文通过把虚拟MIMO技术融合到无线传感网络的跨层优化设计中以最小化能量消耗,延长网络生命周期。并通过对一系列非线性规划问题的求解得出了使能量最小化的最优路由方案、MAC调度以及速率自适应等性能参数。随后重点分析比较了速率自适应技术对能量消耗,最佳路由方案等系统性能参数的影响。

To minimize the energy eomumption and maximize the lifetime of the energy - constraint wireless sensor networks （WSN）, the method of incorporating the virtual MIMO technique into the cross - layer design model is used in this paper.. The minimum energy consumption as well as the optimal routing, MAC and link layer parameters are attained by resolving a set of non - linear progranming（NIP） problems, and the energy efficiency as well as the optimal routing of different system models with or without the link adaptation are discussed in detail.