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首页> 外文会议>IEEE International symposium on Personal, Indoor, and Mobile Radio Communications >Energy efficient adaptive transmission strategy using cooperative diversity for wireless sensor networks
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Energy efficient adaptive transmission strategy using cooperative diversity for wireless sensor networks

机译：无线传感器网络中使用协作分集的高效节能自适应传输策略

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Energy saving strategies pose challenges for wireless Sensor Networks communication, as the nodes have limited energy resources and are battery powered. Thus, there is a strong interest in developing energy efficient transmission techniques. In this paper, we present a new approach to minimize the energy consumption of clustered wireless sensor networks, while achieving the required level of reliability. We consider clusters where sensors transmit monitored data to nearby cluster-head using cooperative communication. The goal of our approach is to minimize the transmit power energy based on Bit Error Probability (BEP) criterion for selective digital relaying (SDR) schemes whose closed form expression was recently derived in previous works. Therefore, the proposed scheme can efficiently allocate the least transmission power among the source and the relays that satisfy the predefined level of reliability while decreasing the energy consumption of the node. Simulation results show that our relay selection algorithm achieves significant energy savings (more than 50% compared with direct transmissions for moderate SNR values and up to 90% in high SNR regions).
机译：节能策略对无线传感器网络通信提出了挑战，因为节点的能源资源有限且由电池供电。因此，对开发节能传输技术非常感兴趣。在本文中，我们提出了一种新方法，可在达到所需可靠性水平的同时，将群集无线传感器网络的能耗降至最低。我们考虑了集群，其中传感器通过协作通信将监视的数据传输到附近的集群头。我们的方法的目标是基于选择性数字中继（SDR）方案的误码率（BEP）标准，将发射功率能量最小化，该方案的闭式表达式最近在以前的工作中得到了推导。因此，提出的方案可以在减少节点的能量消耗的同时，在满足预定义的可靠性水平的源和中继之间高效地分配最小的传输功率。仿真结果表明，我们的中继选择算法可实现显着的节能效果（在中等SNR值的情况下，与直接传输相比节省了50％以上，在高SNR区域则高达90％）。

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