Efficient Channel Estimation for Double-IRS Aided Multi-User MIMO System | IEEE Journals & Magazine | IEEE Xplore

Efficient Channel Estimation for Double-IRS Aided Multi-User MIMO System


Abstract:

To achieve the more significant passive beamforming gain in the double-intelligent reflecting surface (IRS) aided system over the conventional single-IRS counterpart, cha...Show More

Abstract:

To achieve the more significant passive beamforming gain in the double-intelligent reflecting surface (IRS) aided system over the conventional single-IRS counterpart, channel state information (CSI) is indispensable in practice but also more challenging to acquire, due to the presence of not only the single- but also double-reflection links that are intricately coupled and also entail more channel coefficients for estimation. In this paper, we propose a new and efficient channel estimation scheme for the double-IRS aided multi-user multiple-input multiple-output (MIMO) communication system to resolve the cascaded CSI of both its single- and double-reflection links. First, for the single-user case, the single- and double-reflection channels are efficiently estimated at the multi-antenna base station (BS) with both the IRSs turned ON (for maximal signal reflection), by exploiting the fact that their cascaded channel coefficients are scaled versions of their superimposed lower-dimensional CSI. Then, the proposed channel estimation scheme is extended to the multi-user case, where given an arbitrary user's cascaded channel (estimated as in the single-user case), the other users' cascaded channels can also be expressed as lower-dimensional scaled versions of it and thus efficiently estimated at the BS. Simulation results verify the effectiveness of the proposed channel estimation scheme and joint training reflection design for double IRSs, as compared to various benchmark schemes.
Published in: IEEE Transactions on Communications ( Volume: 69, Issue: 6, June 2021)
Page(s): 3818 - 3832
Date of Publication: 09 March 2021

ISSN Information:

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Author image of Beixiong Zheng
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Beixiong Zheng (Member, IEEE) received the B.S. and Ph.D. degrees from the South China University of Technology, Guangzhou, China, in 2013 and 2018, respectively.
From 2015 to 2016, he was a Visiting Student Research Collaborator with Columbia University, New York, NY, USA. He is currently a Research Fellow with the Department of Electrical and Computer Engineering, National University of Singapore. His recent research int...Show More
Beixiong Zheng (Member, IEEE) received the B.S. and Ph.D. degrees from the South China University of Technology, Guangzhou, China, in 2013 and 2018, respectively.
From 2015 to 2016, he was a Visiting Student Research Collaborator with Columbia University, New York, NY, USA. He is currently a Research Fellow with the Department of Electrical and Computer Engineering, National University of Singapore. His recent research int...View more
Author image of Changsheng You
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Changsheng You (Member, IEEE) received the B.Eng. degree in electronic engineering and information science from the University of Science and Technology of China, in 2014, and the Ph.D. degree in electrical and electronic engineering from The University of Hong Kong in 2018.
He is currently a Research Fellow with the Department of Electrical and Computer Engineering, National University of Singapore. His research interests...Show More
Changsheng You (Member, IEEE) received the B.Eng. degree in electronic engineering and information science from the University of Science and Technology of China, in 2014, and the Ph.D. degree in electrical and electronic engineering from The University of Hong Kong in 2018.
He is currently a Research Fellow with the Department of Electrical and Computer Engineering, National University of Singapore. His research interests...View more
Author image of Rui Zhang
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Rui Zhang (Fellow, IEEE) received the B.Eng. (Hons.) and M.Eng. degrees from the National University of Singapore, Singapore, and the Ph.D. degree from Stanford University, Stanford, CA, USA, all in electrical engineering.
From 2007 to 2010, he worked with the Institute for Infocomm Research, ASTAR, Singapore. Since 2010, he has been working with the National University of Singapore, where he is currently a Professor with ...Show More
Rui Zhang (Fellow, IEEE) received the B.Eng. (Hons.) and M.Eng. degrees from the National University of Singapore, Singapore, and the Ph.D. degree from Stanford University, Stanford, CA, USA, all in electrical engineering.
From 2007 to 2010, he worked with the Institute for Infocomm Research, ASTAR, Singapore. Since 2010, he has been working with the National University of Singapore, where he is currently a Professor with ...View more

Author image of Beixiong Zheng
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Beixiong Zheng (Member, IEEE) received the B.S. and Ph.D. degrees from the South China University of Technology, Guangzhou, China, in 2013 and 2018, respectively.
From 2015 to 2016, he was a Visiting Student Research Collaborator with Columbia University, New York, NY, USA. He is currently a Research Fellow with the Department of Electrical and Computer Engineering, National University of Singapore. His recent research interests include intelligent reflecting surface (IRS), index modulation (IM), and non-orthogonal multiple access (NOMA). He was a recipient of the Best Paper Award from the IEEE International Conference on Computing, Networking and Communications in 2016, the Best Ph.D. Thesis Award from China Education Society of Electronics in 2018, the Exemplary Reviewer of IEEE Transactions on Communications, and the Outstanding Reviewer of Physical Communication.
Beixiong Zheng (Member, IEEE) received the B.S. and Ph.D. degrees from the South China University of Technology, Guangzhou, China, in 2013 and 2018, respectively.
From 2015 to 2016, he was a Visiting Student Research Collaborator with Columbia University, New York, NY, USA. He is currently a Research Fellow with the Department of Electrical and Computer Engineering, National University of Singapore. His recent research interests include intelligent reflecting surface (IRS), index modulation (IM), and non-orthogonal multiple access (NOMA). He was a recipient of the Best Paper Award from the IEEE International Conference on Computing, Networking and Communications in 2016, the Best Ph.D. Thesis Award from China Education Society of Electronics in 2018, the Exemplary Reviewer of IEEE Transactions on Communications, and the Outstanding Reviewer of Physical Communication.View more
Author image of Changsheng You
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Changsheng You (Member, IEEE) received the B.Eng. degree in electronic engineering and information science from the University of Science and Technology of China, in 2014, and the Ph.D. degree in electrical and electronic engineering from The University of Hong Kong in 2018.
He is currently a Research Fellow with the Department of Electrical and Computer Engineering, National University of Singapore. His research interests include intelligent reflecting surface, UAV communications, edge learning, mobile-edge computing, wireless power transfer, and convex optimization. He is an Editor of IEEE Communications Letters. He received the IEEE Communications Society Asia-Pacific Region Outstanding Paper Award in 2019 and the Exemplary Reviewer of IEEE Transactions on Communications and IEEE Transactions on Wireless Communications. He was a recipient of the Best Ph.D. Thesis Award of The University of Hong Kong in 2019.
Changsheng You (Member, IEEE) received the B.Eng. degree in electronic engineering and information science from the University of Science and Technology of China, in 2014, and the Ph.D. degree in electrical and electronic engineering from The University of Hong Kong in 2018.
He is currently a Research Fellow with the Department of Electrical and Computer Engineering, National University of Singapore. His research interests include intelligent reflecting surface, UAV communications, edge learning, mobile-edge computing, wireless power transfer, and convex optimization. He is an Editor of IEEE Communications Letters. He received the IEEE Communications Society Asia-Pacific Region Outstanding Paper Award in 2019 and the Exemplary Reviewer of IEEE Transactions on Communications and IEEE Transactions on Wireless Communications. He was a recipient of the Best Ph.D. Thesis Award of The University of Hong Kong in 2019.View more
Author image of Rui Zhang
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Rui Zhang (Fellow, IEEE) received the B.Eng. (Hons.) and M.Eng. degrees from the National University of Singapore, Singapore, and the Ph.D. degree from Stanford University, Stanford, CA, USA, all in electrical engineering.
From 2007 to 2010, he worked with the Institute for Infocomm Research, ASTAR, Singapore. Since 2010, he has been working with the National University of Singapore, where he is currently a Professor with the Department of Electrical and Computer Engineering. He has published more than 200 journal articles and more than 180 conference papers. He has been listed as a Highly Cited Researcher by Thomson Reuters/Clarivate Analytics since 2015. His current research interests include UAV/satellite communications, wireless power transfer, reconfigurable MIMO, and optimization methods.
Dr. Zhang serves as a member of the Steering Committee of the IEEE Wireless Communications Letters. He was a recipient of the Sixth IEEE Communications Society Asia-Pacific Region Best Young Researcher Award in 2011, the Young Researcher Award of National University of Singapore in 2015, and the Wireless Communications Technical Committee Recognition Award in 2020. He was a co-recipient of the IEEE Marconi Prize Paper Award in Wireless Communications in 2015 and 2020, the IEEE Communications Society Asia-Pacific Region Best Paper Award in 2016, the IEEE Signal Processing Society Best Paper Award in 2016, the IEEE Communications Society Heinrich Hertz Prize Paper Award in 2017 and 2020, the IEEE Signal Processing Society Donald G. Fink Overview Paper Award in 2017, and the IEEE Technical Committee on Green Communications and Computing (TCGCC) Best Journal Paper Award in 2017. His coauthored article received the IEEE Signal Processing Society Young Author Best Paper Award in 2017. He served for more than 30 international conferences as the TPC Co-Chair or an Organizing Committee Member, and as the Guest Editor for three special issues in IEEE Journal of Selected Topics in Signal Processing and IEEE Journal on Selected Areas in Communications. He was an elected member of the IEEE Signal Processing Society SPCOM Technical Committee from 2012 to 2017 and SAM Technical Committee from 2013 to 2015, and served as the Vice Chair for the IEEE Communications Society Asia-Pacific Board Technical Affairs Committee from 2014 to 2015. He served as an Editor for IEEE Transactions on Wireless Communications from 2012 to 2016, IEEE Journal on Selected Areas in Communications: Green Communications and Networking Series from 2015 to 2016, IEEE Transactions on Signal Processing from 2013 to 2017, and IEEE Transactions on Green Communications and Networking from 2016 to 2020. He is also an Editor of IEEE Transactions on Communications. He is a Distinguished Lecturer of IEEE Signal Processing Society and IEEE Communications Society.
Rui Zhang (Fellow, IEEE) received the B.Eng. (Hons.) and M.Eng. degrees from the National University of Singapore, Singapore, and the Ph.D. degree from Stanford University, Stanford, CA, USA, all in electrical engineering.
From 2007 to 2010, he worked with the Institute for Infocomm Research, ASTAR, Singapore. Since 2010, he has been working with the National University of Singapore, where he is currently a Professor with the Department of Electrical and Computer Engineering. He has published more than 200 journal articles and more than 180 conference papers. He has been listed as a Highly Cited Researcher by Thomson Reuters/Clarivate Analytics since 2015. His current research interests include UAV/satellite communications, wireless power transfer, reconfigurable MIMO, and optimization methods.
Dr. Zhang serves as a member of the Steering Committee of the IEEE Wireless Communications Letters. He was a recipient of the Sixth IEEE Communications Society Asia-Pacific Region Best Young Researcher Award in 2011, the Young Researcher Award of National University of Singapore in 2015, and the Wireless Communications Technical Committee Recognition Award in 2020. He was a co-recipient of the IEEE Marconi Prize Paper Award in Wireless Communications in 2015 and 2020, the IEEE Communications Society Asia-Pacific Region Best Paper Award in 2016, the IEEE Signal Processing Society Best Paper Award in 2016, the IEEE Communications Society Heinrich Hertz Prize Paper Award in 2017 and 2020, the IEEE Signal Processing Society Donald G. Fink Overview Paper Award in 2017, and the IEEE Technical Committee on Green Communications and Computing (TCGCC) Best Journal Paper Award in 2017. His coauthored article received the IEEE Signal Processing Society Young Author Best Paper Award in 2017. He served for more than 30 international conferences as the TPC Co-Chair or an Organizing Committee Member, and as the Guest Editor for three special issues in IEEE Journal of Selected Topics in Signal Processing and IEEE Journal on Selected Areas in Communications. He was an elected member of the IEEE Signal Processing Society SPCOM Technical Committee from 2012 to 2017 and SAM Technical Committee from 2013 to 2015, and served as the Vice Chair for the IEEE Communications Society Asia-Pacific Board Technical Affairs Committee from 2014 to 2015. He served as an Editor for IEEE Transactions on Wireless Communications from 2012 to 2016, IEEE Journal on Selected Areas in Communications: Green Communications and Networking Series from 2015 to 2016, IEEE Transactions on Signal Processing from 2013 to 2017, and IEEE Transactions on Green Communications and Networking from 2016 to 2020. He is also an Editor of IEEE Transactions on Communications. He is a Distinguished Lecturer of IEEE Signal Processing Society and IEEE Communications Society.View more

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