Channel-Aware Energy Efficient Transmission Strategies for Large Wireless Sensor Networks
Channel-Aware Energy Efficient Transmission Strategies for Large Wireless Sensor Networks
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DOI：
10.1109/lsp.2010.2049602
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发表时间：
2010-05
影响因子：
3.9
通讯作者：
Hyoungsuk Jeon;Jinho Choi;Hyuckjae Lee;J. Ha
中科院分区：
文献类型：
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作者：
Hyoungsuk Jeon;Jinho Choi;Hyuckjae Lee;J. Ha
为了延长无线传感器网络的生存期，我们提出了一种基于信道感知类型的多址（TBMA）方案。为了最大限度地减少数据传输，所提出的方案允许一组传感器在信道增益高于融合中心广播的阈值时在TBMA中机会激活。在每次传输中，激活的传感器以一种使检测误差性能的误差指数最大化的方式控制其发射功率。我们分析了该方案的dep，并表明与随机选择方案相比，它提供了显着的节能，特别是在低信噪比的情况下，大多数功率有限的传感器都在工作。
We propose a channel-aware type-based multiple access (TBMA) scheme for longer lifetime of WSNs. In an effort to minimize data transmission, the proposed scheme allows a set of sensors to be opportunistically activated in TBMA when their channel gains are higher than a threshold broadcasted by the fusion center. In each transmission, the activated sensors control their transmit power in a way to maximize an error exponent of the detection error performance. We analyze the DEPs of the proposed scheme and show that it provides significant energy saving as compared to the random selection scheme especially in the low signal-to-noise ratio regime where most of power-limited sensors are working.