• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Estimation in Wireless Sensor Networks With Security Constraints
【24h】

Estimation in Wireless Sensor Networks With Security Constraints

机译：具有安全约束的无线传感器网络估计

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, we investigate the performance of distributed estimation schemes in a wireless sensor network in the presence of an eavesdropper. The sensors transmit observations to the fusion center (FC), which at the same time are overheard by the eavesdropper. Both the FC and the eavesdropper reconstruct a minimum mean-squared error estimate of the physical quantity observed. We address the problem of transmit power allocation for system performance optimization subject to a total average power constraint on the sensor(s), and a security/secrecy constraint on the eavesdropper. We mainly focus on two scenarios: a single sensor with multiple transmit antennas and multiple sensors with each sensor having a single transmit antenna. For each scenario, given perfect channel state information (CSI) of the FC and full or partial CSI of the eavesdropper, we derive the transmission policies for short-term and long-term cases. For the long-term power allocation case, when the sensor is equipped with multiple antennas, we can achieve zero information leakage in the full CSI case, and dramatically enhance the system performance by deploying the artificial noise technique for the partial CSI case. Asymptotic expressions are derived for the long-term distortion at the FC as the number of sensors or the number of antennas becomes large. In addition, we also consider multiple-sensor multiple-antenna scenario, and simulations show that given the same total number of transmitting antennas the multiple-antenna sensor network is superior to the performance of the multiple-sensor single-antenna network.
机译：在本文中，我们研究了存在窃听者的情况下无线传感器网络中分布式估计方案的性能。传感器将观测结果传输到融合中心（FC），而融合中心（FC）同时被窃听者窃听。 FC和窃听者都重构了观察到的物理量的最小均方误差估计。我们针对传感器的总平均功率约束以及窃听者的安全/保密约束，解决了用于系统性能优化的发射功率分配问题。我们主要关注两种情况：具有多个发射天线的单个传感器和具有每个发射器单个天线的多个传感器。对于每种情况，给定FC的完美信道状态信息（CSI）和窃听者的全部或部分CSI，我们就可以得出短期和长期情况的传输策略。对于长期功率分配情况，当传感器配备多个天线时，我们可以在整个CSI情况下实现零信息泄漏，并通过在部分CSI情况下部署人工噪声技术来显着提高系统性能。随着传感器数量或天线数量变大，FC处的长期失真的渐近表达式被推导出来。此外，我们还考虑了多传感器多天线情况，并且仿真表明，在相同的发射天线总数下，多天线传感器网络要优于多传感器单天线网络的性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号