An Energy-Efficient Cooperative SIMO Transmission Scheme for Wireless Sensor Networks
An Energy-Efficient Cooperative SIMO Transmission Scheme for Wireless Sensor Networks
复制标题
DOI：
10.1109/icc.2009.5198729
复制
发表时间：
2009-06
期刊：
影响因子：
--
通讯作者：
Chin-Liang Wang;Yan Huang;Yu-Chih Huang
中科院分区：
文献类型：
--
作者：
Chin-Liang Wang;Yan Huang;Yu-Chih Huang
本文介绍了无线传感器网络（WSN）的合作单输入多输出（SIMO）传输方案，其中天线的数量和调制的星座大小是针对不同传输距离进行了优化的，从而使能源消耗最小化。与以前的WSN合作MIMO方案相比，该提议的一个实现了较高的能效，并且具有较小的临界距离，而合作MIMO/SIMO优于单输入单输出（SISO）。提出的优化方法进一步扩展到聚类的多跳WSN方案。通过优化发射器天线的数量，接收器天线的数量，星座大小和跳跃长度，我们得出了一种节能的群集合作SIMO多跳线方案。数值结果表明，所提出的方案不仅减少了整体能耗，而且还可以平衡簇之间的能耗。
This paper presents a cooperative single-input multiple-output (SIMO) transmission scheme for wireless sensor networks (WSNs), where the number of antennas and the constellation size of modulation are jointly optimized for different transmission distances such that the energy consumption is minimized. As compared to previous cooperative MIMO schemes for WSNs, the proposed one achieves higher energy efficiency and has a smaller critical distance above which cooperative MIMO/SIMO outperforms single-input single-output (SISO). The proposed optimization method is further extended to a clustered multi-hop WSN scenario. Through joint optimization of the number of transmitter antennas, the number of receiver antennas, the constellation size, and the hop length, we derive an energy-efficient clustered cooperative SIMO multi-hop scheme. Numerical results show that the proposed scheme not only reduces the overall energy consumption but also balances the energy consumption among clusters.