...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Communications >Exploiting Full-Duplex Receivers for Achieving Secret Communications in Multiuser MISO Networks
【24h】

Exploiting Full-Duplex Receivers for Achieving Secret Communications in Multiuser MISO Networks

机译：利用全双工接收器在多用户MISO网络中实现秘密通信

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

We consider a broadcast channel in which a multi-antenna transmitter (Alice) sends K confidential information signals to K legitimate users (Bobs) in the presence of L eavesdroppers (Eves). Alice uses multiple-input multiple-output (MIMO) precoding to generate the information signals along with her own (Tx-based) friendly jamming (FJ). Interference at each Bob is removed by MIMO zero-forcing. This, however, leaves a “vulnerability region” around each Bob, which can be exploited by a nearby Eve. We address this problem by augmenting Tx-based FJ (TxFJ) with Rx-based FJ (RxFJ), generated by each Bob. Specifically, each Bob uses self-interference suppression to transmit a friendly jamming signal, while simultaneously receiving an information signal over the same channel. We minimize the powers allocated to the information, TxFJ, and RxFJ signals under given guarantees on the individual secrecy rate for each Bob. The problem is solved for the cases when the eavesdropper’s channel state information is known/unknown. Simulations show the effectiveness of the proposed solution. Furthermore, we discuss how to schedule transmissions when the rate requirements need to be satisfied on average rather than instantaneously. Under special cases, a scheduling algorithm that serves only the strongest receivers is shown to outperform the one that schedules all receivers.
机译：我们考虑一个广播信道，其中多天线发射机（Alice）在L个窃听者（Eves）存在的情况下向K个合法用户（Bobs）发送K个机密信息信号。爱丽丝使用多输入多输出（MIMO）预编码来生成信息信号以及她自己的（基于Tx的）友好干扰（FJ）。 MIMO零强制消除了每个鲍勃的干扰。但是，这在每个Bob周围都留下了一个“漏洞区域”，附近的夏娃可以利用该漏洞区域。我们通过用每个鲍勃生成的基于Rx的FJ（RxFJ）扩充基于Tx的FJ（TxFJ）来解决此问题。具体地，每个鲍勃使用自干扰抑制来发送友好的干扰信号，同时在同一信道上接收信息信号。在给定每个鲍勃的个人保密率的前提下，我们将分配给信息，TxFJ和RxFJ信号的功率降至最低。对于窃听者的通道状态信息已知/未知的情况，此问题已解决。仿真表明了所提出解决方案的有效性。此外，我们讨论了如何在平均而不是瞬时满足速率要求时调度传输。在特殊情况下，仅服务于最强接收器的调度算法表现出优于调度所有接收器的调度算法。

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