A Beam Forming Method for Secure Communications of Full Duplex Physical Layer

doi:10.7652/xjtuxb201508006

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A Beam Forming Method for Secure Communications of Full Duplex Physical Layer

更新时间：2025-07-09

- A Beam Forming Method for Secure Communications of Full Duplex Physical Layer
- Vol. 49, Issue 8, Pages: 31-37(2015)
- 作者机构：
  
  1. 温州医科大学计算机与信息管理系,浙江,温州,325035
  2. 清华大学自动化系,北京,100084
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201508006
  CLC： TN929.5
- Online First：10 August 2015，
  
  Published：2015
- 稿件说明：
移动端阅览
A Beam Forming Method for Secure Communications of Full Duplex Physical Layer[J]. 2015, 49(8): 31-37.
DOI：

A Beam Forming Method for Secure Communications of Full Duplex Physical Layer[J]. 2015, 49(8): 31-37. DOI： 10.7652/xjtuxb201508006.

摘要

在保证物理层安全的前提下

为解决传统迫零成形算法在全双工通信功耗过高的问题

提出了一种适用于全双工通信的信息波束和噪声波束联合成形的低功耗方法。首先

在高斯信道模型下对全双工基站的传输信号进行信息波束成形

实现基站与接收端的信息传输; 然后

在全双工基站发射天线中添加人工噪声

并将噪声波束成形保证全双工基站的接收信息和发送信息不被偷听者窃听; 最后

经过凸优化求解

将NP难的信息和噪声波束联合成形问题转化为可高效求解的凸优化问题

最终得到最优的信息和噪声波束成形向量。仿真结果表明

在上下行安全速率均为3 b/(s·Hz)时

该方法可以有效降低全双工基站的功耗

与经典的迫零波束成形算法相比

均值功耗降低约18%。

Abstract

A joint beamforming method of information and noise is proposed to reduce the power consumption of conventional zero-forcing beamforming method for full duplex secure communication systems. An information beamforming vector is designed for down-link communication of a full-duplex base-station(FD-BS)in a Gaussian channel model

and a noise beamforming vector is designed to jam the eavesdropper and to protect the information of both uplink and downlink for FD-BS. Then the joint beamforming problem

that is NP hard

is converted to a convex optimization problem which can be efficiently solved

and the optimal information beamforming vector and noise beamforming vector are derived from the optimal solutions. Simulation results show that when both the uplink and the downlink secret rates are set to 3 b/(s·Hz)

the proposed algorithm effectively reduces the power consumption of FD-BS. A comparison with the conventional zero-forcing beamforming method show that the power saved by the proposed algorithm is 18%.

关键词

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references

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王文杰 1

殷勤业 1

穆鹏程 1

邓科

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殷勤业

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Related Institution

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