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author:

Liu, L. (Liu, L..) [1] | Wang, Z. (Wang, Z..) [2] | Zhuang, Z. (Zhuang, Z..) [3] | Liu, T. (Liu, T..) [4] | Zhou, X. (Zhou, X..) [5] | Hu, J. (Hu, J..) [6] | Han, Z. (Han, Z..) [7] | Shu, F. (Shu, F..) [8]

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Scopus

Abstract:

In this work, we investigate linear precoding for secure spatial modulation. With secure spatial modulation, the achievable secrecy rate does not have an easy-to-compute mathematical expression, and hence, has to be evaluated numerically, which leads to high complexity in the optimal precoder design. To address this issue, an accurate and analytical approximation of the secrecy rate is derived in this work. Using this approximation as the objective function, two low-complexity linear precoding methods based on gradient descent (GD) and successive convex approximation (SCA) are proposed. The GD-based method has much lower complexity but usually converges to a local optimum. On the other hand, the SCA-based method uses semi-definite relaxation to deal with the non-convexity in the precoder optimization problem and achieves near-optimal solution. Compared with the existing GD-based precoder design in the literature that directly uses the exact and numerically evaluated secrecy capacity as the objective function, the two proposed designs have significantly lower complexity. Our SCA-based design even achieves a higher secrecy rate than the existing GD-based design. © 2020 Elsevier B.V.

Keyword:

Gradient descent; Linear precoding; MIMO; Secure spatial modulation; Successive convex approximation

Community:

  • [ 1 ] [Liu, L.]School of Electronic and Optical Engineering, Nanjing University of Science and Technology210094, China
  • [ 2 ] [Wang, Z.]School of Electronic and Optical Engineering, Nanjing University of Science and Technology210094, China
  • [ 3 ] [Zhuang, Z.]School of Electronic and Optical Engineering, Nanjing University of Science and Technology210094, China
  • [ 4 ] [Liu, T.]School of Electronic and Optical Engineering, Nanjing University of Science and Technology210094, China
  • [ 5 ] [Zhou, X.]School of Electronic and Optical Engineering, Nanjing University of Science and Technology210094, China
  • [ 6 ] [Hu, J.]College of Physics and Information Engineering, Fuzhou University350116, China
  • [ 7 ] [Han, Z.]Department of Electrical and Computer Engineering, University of Houston77004, United States
  • [ 8 ] [Shu, F.]School of Electronic and Optical Engineering, Nanjing University of Science and Technology210094, China

Reprint 's Address:

  • [Zhuang, Z.]School of Electronic and Optical Engineering, Nanjing University of Science and TechnologyChina

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Source :

Physical Communication

ISSN: 1874-4907

Year: 2020

Volume: 41

1 . 8 1

JCR@2020

2 . 0 0 0

JCR@2023

ESI HC Threshold:149

JCR Journal Grade:3

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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