Abstract:
Covert wireless communications aim to hide the existence of transmission behavior from watchful adversaries to enhance security. In this paper, we propose a spectrum mask...Show MoreMetadata
Abstract:
Covert wireless communications aim to hide the existence of transmission behavior from watchful adversaries to enhance security. In this paper, we propose a spectrum mask based covert communication strategy in Internet of Things (IoT) networks, where the overt channels are leveraged to enhance the covertness. Specifically, the legitimate IoT transmitter superimposes its own message on the overt channel to avoid being detected by the warden. We assume that proper Gaussian signaling (PGS) is adopted at the overt channel, and improper Gaussian signaling (IGS) is adopted at the legitimate transmitter to improve the covert transmission performance. To maximize the covert rate of the legitimate IoT system, a joint transmit power and IGS factor optimization problem is formulated under the constraints of covertness requirement. The metric of minimum error detection probability, that represents the worst-case for the legitimate transmitter, is utilized to measure the covertness. By exploiting the piece-wise monotonic properties of the objective function and the constraints, we derive the optimal transmit power and IGS factor pairs in both the IGS and PGS schemes. Finally, extensive numerical results are presented to demonstrate that the IGS scheme can improve the covert rate compared to the PGS scheme under a given covertness constraint.
Published in: IEEE Transactions on Communications ( Volume: 69, Issue: 12, December 2021)
Funding Agency:

State Key Laboratory of Integrated Service Networks, School of Telecommunications Engineering, Xidian University, Xi’an, China
Danyang Wang (Member, IEEE) received the Ph.D. degree from the School of Telecommunications Engineering, Xidian University, Xi’an, China, in 2017. From 2016 to 2017, he visited the Broadband Communications Research Group, University of Waterloo, Waterloo, ON, Canada. After that, he was a Post-Doctoral Research Fellow at Xidian University from 2018 to 2020. He is currently a Lecturer with the State Key Laboratory of Integr...Show More
Danyang Wang (Member, IEEE) received the Ph.D. degree from the School of Telecommunications Engineering, Xidian University, Xi’an, China, in 2017. From 2016 to 2017, he visited the Broadband Communications Research Group, University of Waterloo, Waterloo, ON, Canada. After that, he was a Post-Doctoral Research Fellow at Xidian University from 2018 to 2020. He is currently a Lecturer with the State Key Laboratory of Integr...View more

State Key Laboratory of Integrated Service Networks, School of Telecommunications Engineering, Xidian University, Xi’an, China
Peihan Qi (Member, IEEE) received the B.S. degree in telecommunications engineering from Chang’an University, Xi’an, in 2006, and the M.S. degree in communication and information system and the Ph.D. degree from Xidian University in 2011 and 2014, respectively. Since July 2018, he has been an Associate Professor with the School of Telecommunications Engineering, Xidian University. His interests include compressed sensing,...Show More
Peihan Qi (Member, IEEE) received the B.S. degree in telecommunications engineering from Chang’an University, Xi’an, in 2006, and the M.S. degree in communication and information system and the Ph.D. degree from Xidian University in 2011 and 2014, respectively. Since July 2018, he has been an Associate Professor with the School of Telecommunications Engineering, Xidian University. His interests include compressed sensing,...View more

Department of Electrical and Computer Engineering, University of Windsor, Windsor, ON, Canada
Ning Zhang (Senior Member, IEEE) received the Ph.D. degree in electrical and computer engineering from the University of Waterloo, Canada, in 2015. After that, he was a Post-Doctoral Research Fellow at the University of Waterloo and the University of Toronto, Canada. He is currently an Associate Professor with the Department of Electrical and Computer Engineering, University of Windsor, Canada. His research interests incl...Show More
Ning Zhang (Senior Member, IEEE) received the Ph.D. degree in electrical and computer engineering from the University of Waterloo, Canada, in 2015. After that, he was a Post-Doctoral Research Fellow at the University of Waterloo and the University of Toronto, Canada. He is currently an Associate Professor with the Department of Electrical and Computer Engineering, University of Windsor, Canada. His research interests incl...View more

State Key Laboratory of Integrated Service Networks, School of Telecommunications Engineering, Xidian University, Xi’an, China
Jiangbo Si (Senior Member, IEEE) received the B.S. degree in communications engineering and the M.S. and Ph.D. degrees in communication and information systems from Xidian University, Xi’an, China, in 2003, 2006, and 2010, respectively. Since 2010, he has been a fixed Researcher with the State Key Laboratory of Integrated Services Networks, Xidian University, where he is currently a Full Professor with the School of Commu...Show More
Jiangbo Si (Senior Member, IEEE) received the B.S. degree in communications engineering and the M.S. and Ph.D. degrees in communication and information systems from Xidian University, Xi’an, China, in 2003, 2006, and 2010, respectively. Since 2010, he has been a fixed Researcher with the State Key Laboratory of Integrated Services Networks, Xidian University, where he is currently a Full Professor with the School of Commu...View more

State Key Laboratory of Integrated Service Networks, School of Telecommunications Engineering, Xidian University, Xi’an, China
Zan Li (Senior Member, IEEE) received the B.S. degree in communications engineering and the M.S. and Ph.D. degrees in communication and information systems from Xidian University, Xi’an, China, in 1998, 2001, and 2006, respectively. She is currently a Professor with the State Key Laboratory of Integrated Services Networks, School of Telecommunications Engineering, Xidian University. Her research interests include topics o...Show More
Zan Li (Senior Member, IEEE) received the B.S. degree in communications engineering and the M.S. and Ph.D. degrees in communication and information systems from Xidian University, Xi’an, China, in 1998, 2001, and 2006, respectively. She is currently a Professor with the State Key Laboratory of Integrated Services Networks, School of Telecommunications Engineering, Xidian University. Her research interests include topics o...View more

Department of Electrical and Computer Engineering, The University of Texas at Dallas, Richardson, TX, USA
Naofal Al-Dhahir (Fellow, IEEE) received the Ph.D. degree from Stanford University. He was a Principal Member of Technical Staff at GE Research Center and AT&T Shannon Laboratory from 1994 to 2003. He is currently an Erik Jonsson Distinguished Professor and the Associate Head of the ECE Department at UT-Dallas. He is a co-inventor of 43 issued patents, coauthor of over 470 articles, and a co-recipient of four IEEE best pa...Show More
Naofal Al-Dhahir (Fellow, IEEE) received the Ph.D. degree from Stanford University. He was a Principal Member of Technical Staff at GE Research Center and AT&T Shannon Laboratory from 1994 to 2003. He is currently an Erik Jonsson Distinguished Professor and the Associate Head of the ECE Department at UT-Dallas. He is a co-inventor of 43 issued patents, coauthor of over 470 articles, and a co-recipient of four IEEE best pa...View more

State Key Laboratory of Integrated Service Networks, School of Telecommunications Engineering, Xidian University, Xi’an, China
Danyang Wang (Member, IEEE) received the Ph.D. degree from the School of Telecommunications Engineering, Xidian University, Xi’an, China, in 2017. From 2016 to 2017, he visited the Broadband Communications Research Group, University of Waterloo, Waterloo, ON, Canada. After that, he was a Post-Doctoral Research Fellow at Xidian University from 2018 to 2020. He is currently a Lecturer with the State Key Laboratory of Integrated Service Networks, School of Telecommunication Engineering, Xidian University. His research interests are in the area of cognitive radio networks, cooperative spectrum sensing, covert communication, and machine learning. He received the Best Paper Award from IEEE SAGC 2020.
Danyang Wang (Member, IEEE) received the Ph.D. degree from the School of Telecommunications Engineering, Xidian University, Xi’an, China, in 2017. From 2016 to 2017, he visited the Broadband Communications Research Group, University of Waterloo, Waterloo, ON, Canada. After that, he was a Post-Doctoral Research Fellow at Xidian University from 2018 to 2020. He is currently a Lecturer with the State Key Laboratory of Integrated Service Networks, School of Telecommunication Engineering, Xidian University. His research interests are in the area of cognitive radio networks, cooperative spectrum sensing, covert communication, and machine learning. He received the Best Paper Award from IEEE SAGC 2020.View more

State Key Laboratory of Integrated Service Networks, School of Telecommunications Engineering, Xidian University, Xi’an, China
Peihan Qi (Member, IEEE) received the B.S. degree in telecommunications engineering from Chang’an University, Xi’an, in 2006, and the M.S. degree in communication and information system and the Ph.D. degree from Xidian University in 2011 and 2014, respectively. Since July 2018, he has been an Associate Professor with the School of Telecommunications Engineering, Xidian University. His interests include compressed sensing, spectrum sensing in cognitive radio networks, and high-speed digital signal processing.
Peihan Qi (Member, IEEE) received the B.S. degree in telecommunications engineering from Chang’an University, Xi’an, in 2006, and the M.S. degree in communication and information system and the Ph.D. degree from Xidian University in 2011 and 2014, respectively. Since July 2018, he has been an Associate Professor with the School of Telecommunications Engineering, Xidian University. His interests include compressed sensing, spectrum sensing in cognitive radio networks, and high-speed digital signal processing.View more

Department of Electrical and Computer Engineering, University of Windsor, Windsor, ON, Canada
Ning Zhang (Senior Member, IEEE) received the Ph.D. degree in electrical and computer engineering from the University of Waterloo, Canada, in 2015. After that, he was a Post-Doctoral Research Fellow at the University of Waterloo and the University of Toronto, Canada. He is currently an Associate Professor with the Department of Electrical and Computer Engineering, University of Windsor, Canada. His research interests include connected vehicles, mobile edge computing, wireless networking, and machine learning. He received six best paper awards from conferences and journals, such as IEEE GLOBECOM and IEEE ICC. He also received IEEE TCSVC Rising Star Award for outstanding contributions to research and practice of mobile edge computing and Internet of Things service. He also serves/served as the General Chair for IEEE SAGC 2021, the TPC Chair for IEEE VTC 2021 and IEEE SAGC 2020, and the track chair for several international conferences and workshops. He is a Highly Cited Researcher. He serves as an Associate Editor of IEEE Internet of Things Journal, IEEE Transactions on Cognitive Communications and Networking, and IEEE Systems Journal, and a Guest Editor of several international journals, such as IEEE Wireless Communications, IEEE Transactions on Industrial Informatics, and IEEE Transactions on Intelligent Transportation Systems.
Ning Zhang (Senior Member, IEEE) received the Ph.D. degree in electrical and computer engineering from the University of Waterloo, Canada, in 2015. After that, he was a Post-Doctoral Research Fellow at the University of Waterloo and the University of Toronto, Canada. He is currently an Associate Professor with the Department of Electrical and Computer Engineering, University of Windsor, Canada. His research interests include connected vehicles, mobile edge computing, wireless networking, and machine learning. He received six best paper awards from conferences and journals, such as IEEE GLOBECOM and IEEE ICC. He also received IEEE TCSVC Rising Star Award for outstanding contributions to research and practice of mobile edge computing and Internet of Things service. He also serves/served as the General Chair for IEEE SAGC 2021, the TPC Chair for IEEE VTC 2021 and IEEE SAGC 2020, and the track chair for several international conferences and workshops. He is a Highly Cited Researcher. He serves as an Associate Editor of IEEE Internet of Things Journal, IEEE Transactions on Cognitive Communications and Networking, and IEEE Systems Journal, and a Guest Editor of several international journals, such as IEEE Wireless Communications, IEEE Transactions on Industrial Informatics, and IEEE Transactions on Intelligent Transportation Systems.View more

State Key Laboratory of Integrated Service Networks, School of Telecommunications Engineering, Xidian University, Xi’an, China
Jiangbo Si (Senior Member, IEEE) received the B.S. degree in communications engineering and the M.S. and Ph.D. degrees in communication and information systems from Xidian University, Xi’an, China, in 2003, 2006, and 2010, respectively. Since 2010, he has been a fixed Researcher with the State Key Laboratory of Integrated Services Networks, Xidian University, where he is currently a Full Professor with the School of Communication Engineering. In 2019, he was a Visiting Scholar at The University of Texas at Dallas, USA. As the main person, he has participated in Major National Science and Technology Projects and the National 863 Research Projects. His research interests include physical layer security, cooperative spectrum sensing, and covert transmission. He is an Associate Editor for IEEE Open Journal of the Communications Society. Up to now, he has been in charge of many projects, including those with the National Natural Science Foundation of China and the Natural Science Foundation of Shaanxi Province.
Jiangbo Si (Senior Member, IEEE) received the B.S. degree in communications engineering and the M.S. and Ph.D. degrees in communication and information systems from Xidian University, Xi’an, China, in 2003, 2006, and 2010, respectively. Since 2010, he has been a fixed Researcher with the State Key Laboratory of Integrated Services Networks, Xidian University, where he is currently a Full Professor with the School of Communication Engineering. In 2019, he was a Visiting Scholar at The University of Texas at Dallas, USA. As the main person, he has participated in Major National Science and Technology Projects and the National 863 Research Projects. His research interests include physical layer security, cooperative spectrum sensing, and covert transmission. He is an Associate Editor for IEEE Open Journal of the Communications Society. Up to now, he has been in charge of many projects, including those with the National Natural Science Foundation of China and the Natural Science Foundation of Shaanxi Province.View more

State Key Laboratory of Integrated Service Networks, School of Telecommunications Engineering, Xidian University, Xi’an, China
Zan Li (Senior Member, IEEE) received the B.S. degree in communications engineering and the M.S. and Ph.D. degrees in communication and information systems from Xidian University, Xi’an, China, in 1998, 2001, and 2006, respectively. She is currently a Professor with the State Key Laboratory of Integrated Services Networks, School of Telecommunications Engineering, Xidian University. Her research interests include topics on wireless communications and signal processing, such as covert communication, spectrum sensing, and cooperative communications. She was awarded the National Science Fund for Distinguished Young Scholars. She is a fellow of Institution of Engineering and Technology (IET), China Institute of Electronics (CIE), and China Institute of Communications (CIC). She serves as an Associate Editor for IEEE Transactions on Cognitive Communications and Networking and China Communications.
Zan Li (Senior Member, IEEE) received the B.S. degree in communications engineering and the M.S. and Ph.D. degrees in communication and information systems from Xidian University, Xi’an, China, in 1998, 2001, and 2006, respectively. She is currently a Professor with the State Key Laboratory of Integrated Services Networks, School of Telecommunications Engineering, Xidian University. Her research interests include topics on wireless communications and signal processing, such as covert communication, spectrum sensing, and cooperative communications. She was awarded the National Science Fund for Distinguished Young Scholars. She is a fellow of Institution of Engineering and Technology (IET), China Institute of Electronics (CIE), and China Institute of Communications (CIC). She serves as an Associate Editor for IEEE Transactions on Cognitive Communications and Networking and China Communications.View more

Department of Electrical and Computer Engineering, The University of Texas at Dallas, Richardson, TX, USA
Naofal Al-Dhahir (Fellow, IEEE) received the Ph.D. degree from Stanford University. He was a Principal Member of Technical Staff at GE Research Center and AT&T Shannon Laboratory from 1994 to 2003. He is currently an Erik Jonsson Distinguished Professor and the Associate Head of the ECE Department at UT-Dallas. He is a co-inventor of 43 issued patents, coauthor of over 470 articles, and a co-recipient of four IEEE best paper awards. He is a Fellow of the National Academy of Inventors. He received the 2019 IEEE SPCC Technical Recognition Award and the 2021 Qualcomm Faculty Award. He served as the Editor-in-Chief of IEEE Transactions on Communications from January 2016 to December 2019.
Naofal Al-Dhahir (Fellow, IEEE) received the Ph.D. degree from Stanford University. He was a Principal Member of Technical Staff at GE Research Center and AT&T Shannon Laboratory from 1994 to 2003. He is currently an Erik Jonsson Distinguished Professor and the Associate Head of the ECE Department at UT-Dallas. He is a co-inventor of 43 issued patents, coauthor of over 470 articles, and a co-recipient of four IEEE best paper awards. He is a Fellow of the National Academy of Inventors. He received the 2019 IEEE SPCC Technical Recognition Award and the 2021 Qualcomm Faculty Award. He served as the Editor-in-Chief of IEEE Transactions on Communications from January 2016 to December 2019.View more