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Performance Analysis of Energy Detection for MIMO Decision Fusion in Wireless Sensor Networks Over Arbitrary Fading Channels

机译:任意衰落信道下无线传感器网络中MIMO决策融合能量检测的性能分析

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摘要

In this paper, we consider a wireless sensor network (WSN) with sensors simultaneously reporting their decision to a fusion center (FC) equipped with multiple antennas. A Gaussian mixture channel model is used to obtain a general fading characterization of the channels ensemble between the sensors and the FC. Energy detection is studied as an appealing low-complexity sub-optimal alternative to the (computationally expensive) optimal test based on log-likelihood ratio. Closed-form theoretical performance is obtained for the energy test and furthermore asymptotic analysis for both tests is derived in order to provide a detailed characterization of large-system scenarios. Finally, the simulation results are provided to confirm the theoretical results and compare performance trends of the two tests.
机译:在本文中,我们考虑无线传感器网络(WSN),其中传感器同时向配备多个天线的融合中心(FC)报告其决策。高斯混合通道模型用于获得传感器和FC之间通道整体的一般衰落特性。能量检测是作为基于对数似然比的(计算上昂贵的)最佳测试的一种有吸引力的低复杂度次优替代方法。能量测试获得了封闭形式的理论性能,并且进一步推导了两种测试的渐进分析,以便对大型系统场景进行详细的表征。最后,提供了仿真结果以确认理论结果并比较两个测试的性能趋势。

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