Optimal Distributed Detection for Complex Field Network Coding Assisted Wireless Sensor Networks with Non-Orthogonal Communications
Optimal Distributed Detection for Complex Field Network Coding Assisted Wireless Sensor Networks with Non-Orthogonal Communications
复制标题
非正交通信复杂现场网络编码辅助无线传感器网络的最优分布式检测
DOI：
10.1155/2016/9758780
复制
发表时间：
2016
影响因子：
--
通讯作者：
Hongbo Zhu
中科院分区：
文献类型：
--
作者：
Yulun Cheng;Longxiang Yang;Hongbo Zhu
复杂现场网络编码（CFNC）使信号传输和信息融合能够在非正交信道上进行，从根本上提高了无线传感器网络（WSNs）的带宽效率和传输可靠性。研究了CFNC辅助无线传感器网络的功率分配问题。通过提高q函数的逼近精度，导出了所考虑网络的成对误差概率界的封闭表达式，从而提高了功率分配的优化效率。在此基础上，对固定功率约束下的继电器功率系数进行了优化。同时，分析了拓扑参数对功率分配的影响。仿真结果表明，所提出的功率分配方法在检测性能方面优于基准测试方法。所得的功率系数表达式和见解可以为CFNC辅助wsn的功率分配设计提供有用的建议。
Complex field network coding (CFNC) enables signal transmission and information fusion to be operated over nonorthogonal channels, which essentially improves both the bandwidth efficiency and transmission reliability of the wireless sensor networks (WSNs). This paper investigates the power allocation for the CFNC assisted WSNs. By improving the accuracy of the approximation forQfunction, the closed‐form expression of the pairwise error probability bound for the considered network is derived, so as to improve the optimization efficiency of the power allocation. On the basis of the expression, the relay power coefficient is optimized under the fixed power constraint. Besides, the impacts of the topology parameters on the power allocation are also analyzed accordingly. Simulations demonstrate that the proposed power allocation outperforms the benchmark in terms of the detection performance. The obtained expression of the power coefficient and insights can provide useful suggestions for the power allocation design of the CFNC assisted WSNs.