SecureLinQ: Joint Precoding and Scheduling for Secure Device-to-Device Networks

Jinseok Choi, Jeonghun Park

Research output: Contribution to journalArticlepeer-review


We propose joint design on precoding and scheduling for secure device-to-device networks, wherein transmitters (TXs) send confidential messages to associated receivers (RXs) while the eavesdroppers seek to wiretap the messages. To this end, we solve a network sum secrecy spectral efficiency (SE) maximization problem. The main challenges are: {i ) the problem is non-convex and ii ) the secrecy SE is not smooth with the presence of multiple eavesdroppers. To address the difficulties, we first approximate the secrecy SE by exploiting a smooth maximum function and transform the original problem into a tractable non-convex form. Subsequently, we propose a low-complexity algorithm to find a sub-optimal solution, referred as SecureLinQ. Simulation results validate the performance of SecureLinQ.

Original languageEnglish
Article number9153067
Pages (from-to)2078-2082
Number of pages5
JournalIEEE Wireless Communications Letters
Issue number12
Publication statusPublished - 2020 Dec

Bibliographical note

Funding Information:
Manuscript received May 26, 2020; revised July 21, 2020; accepted July 25, 2020. Date of publication July 30, 2020; date of current version December 9, 2020. This work was supported by the Kyungpook National University Research Fund, 2019. The associate editor coordinating the review of this article and approving it for publication was J. Tang. (Corresponding author: Jeonghun Park.) Jinseok Choi is with Wireless R&D, Qualcomm Inc., San Diego, CA 92121 USA (e-mail:

Publisher Copyright:
© 2012 IEEE.

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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