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Novel Codebook Design for Channel State Information Quantization in MIMO Rician Fading Channels With Limited Feedback | IEEE Journals & Magazine | IEEE Xplore

Novel Codebook Design for Channel State Information Quantization in MIMO Rician Fading Channels With Limited Feedback


Abstract:

When a channel consists of a line-of-sight (LoS) path as well as non-LoS components, codebook design for channel state information (CSI) quantization is required to take ...Show More

Abstract:

When a channel consists of a line-of-sight (LoS) path as well as non-LoS components, codebook design for channel state information (CSI) quantization is required to take account of both of them. However, the conventional codebook design requires infinitely many optimal codebooks corresponding to all possible Rician factors, which is impossible in practice. In this regard, we propose an effective codebook adaptive to any Rician factors, while guaranteeing comparable performance to the optimal codebook. Contrary to the conventional approaches, the adaptation to Rician factors suffices by sharing only a single common codebook between the transmitter and receiver. We first investigate the distribution of the angle between the channel vector and the LoS component, where the distribution depends on Rician factors that reflect the power ratio of LoS and non-LoS components. Driven by the analysis, we devise a band-structured non-homogeneous codebook and derive the upper bound of the quantization error of the proposed codebook. The design parameters of the proposed codebook are optimized to minimize the quantization error bound. Using an approximation, we also derive a tractable near-optimal solution of the parameters determining the proposed codebook. Numerical results exhibit that the proposed codebook substantially outperforms conventional methods and achieves near-optimal performance in terms of the average quantization distortion and average sum rate.
Published in: IEEE Transactions on Signal Processing ( Volume: 69)
Page(s): 2858 - 2872
Date of Publication: 07 May 2021

ISSN Information:

Funding Agency:

Author image of Jinho Kang
School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
Jinho Kang (Student Member, IEEE) received the B.S. and M.S. degrees in mechanical engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2013 and 2015, respectively. He is currently working toward the Ph.D. degree with the School of Electrical Engineering, KAIST. His research interests include MIMO, limited feedback, statistical signal processing, and machine learning for wirele...Show More
Jinho Kang (Student Member, IEEE) received the B.S. and M.S. degrees in mechanical engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2013 and 2015, respectively. He is currently working toward the Ph.D. degree with the School of Electrical Engineering, KAIST. His research interests include MIMO, limited feedback, statistical signal processing, and machine learning for wirele...View more
Author image of Wan Choi
Institute of New Media and Communications and Department of Electrical and Computer Engineering, Seoul National University (SNU), Seoul, South Korea
Wan Choi (Fellow, IEEE) received the B.Sc. and M.Sc. degrees from the School of Electrical Engineering and Computer Science, Seoul National University (SNU), Seoul, South Korea, in 1996 and 1998, respectively, and the Ph.D. degree from the Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX, USA, in 2006. He is currently a Professor with the Department of Electrical and Compute...Show More
Wan Choi (Fellow, IEEE) received the B.Sc. and M.Sc. degrees from the School of Electrical Engineering and Computer Science, Seoul National University (SNU), Seoul, South Korea, in 1996 and 1998, respectively, and the Ph.D. degree from the Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX, USA, in 2006. He is currently a Professor with the Department of Electrical and Compute...View more

I. Introduction

To Fully exploit the advantages of multiple-input multiple-output (MIMO) communications, the accurate knowledge of channel state information at transmitter (CSIT) is crucial. In time-division duplex (TDD) systems, CSIT is obtained by uplink channel estimation based on the uplink and downlink channel reciprocity. On the other hand, in frequency division duplexing (FDD) systems, uplink and downlink channels are usually independent of each other [1]–[4] and thus feedback on CSI from receivers is required. A popular feedback technique is codebook based approach where an index of a quantized CSI in a pre-designed codebook is fed back to a transmitter. In the Long Term Evolution (LTE) of the Third Generation Partnership Project (3GPP) standard, each receiver reports rank indicator (RI) which corresponds to the number of independent data streams, precoding matrix indicator (PMI) from the pre-designed codebook, and channel quality indicator (CQI) which represents the channel quality correponding to the modulation and coding scheme [5], [6]. On the other hand, explicit feedback schemes which directly reports a quantized CSI allow more flexibility of transmission and the reception methods and achieve a higher scheduling gain but they require larger overhead than implicit feedback [2], [6]. With the codebook based feedback, the accuracy of CSI depends on the codebook structure and the amount of allowed feedback bits. On this account, one of the main research thrusts of MIMO communications has been on efficient codebook design with limited feedback for various channels.

Author image of Jinho Kang
School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
Jinho Kang (Student Member, IEEE) received the B.S. and M.S. degrees in mechanical engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2013 and 2015, respectively. He is currently working toward the Ph.D. degree with the School of Electrical Engineering, KAIST. His research interests include MIMO, limited feedback, statistical signal processing, and machine learning for wireless communications.
Jinho Kang (Student Member, IEEE) received the B.S. and M.S. degrees in mechanical engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2013 and 2015, respectively. He is currently working toward the Ph.D. degree with the School of Electrical Engineering, KAIST. His research interests include MIMO, limited feedback, statistical signal processing, and machine learning for wireless communications.View more
Author image of Wan Choi
Institute of New Media and Communications and Department of Electrical and Computer Engineering, Seoul National University (SNU), Seoul, South Korea
Wan Choi (Fellow, IEEE) received the B.Sc. and M.Sc. degrees from the School of Electrical Engineering and Computer Science, Seoul National University (SNU), Seoul, South Korea, in 1996 and 1998, respectively, and the Ph.D. degree from the Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX, USA, in 2006. He is currently a Professor with the Department of Electrical and Computer Engineering, SNU. From February 2007 to February 2020, he was a Professor with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. From 1998 to 2003, he was a Senior Member of the Technical Staff of the R&D Division of KT, South Korea, where he researched 3G CDMA systems.
He was the recipient of the IEEE Vehicular Technology Society Jack Neubauer Memorial Award (Best System Paper Award) in 2002, the IEEE Vehicular Technology Society Dan Noble Fellowship Award in 2006, the IEEE Communication Society Asia Pacific Young Researcher Award in 2007, the Haedong Young Scholar Award from KICS in 2012, and the Irwin-Jacobs Award from Qualcomm and KICS in 2015. While with the University of Texas at Austin, he was the recipient of William S. Livingston Graduate Fellowship and Information and Telecommunication Fellowship from the Ministry of Information and Communication, South Korea. From December 2014 to June 2019, he was an Executive Editor and since July 2019, has been the Executive Editor Chair of the IEEE Transactions on Wireless Communications. He is also the Editor of the IEEE Transactions on Vehicular Technology and was the Editor of the IEEE Transactions on Wireless Communications from 2009 to 2014, of the IEEE Wireless Communications Letters from 2012 to 2017, and the Guest Editor of the 5G Wireless Communication System special issue of the IEEE Journal on Selected Areas in Communications. He is a Fellow of the IEEE (recommended by IEEE Communication Society) for the contribution to the analysis and design of multicell communication systems and currently is a Member of Fellow Evaluation Committee, IEEE Vehicular Technology Society.
Wan Choi (Fellow, IEEE) received the B.Sc. and M.Sc. degrees from the School of Electrical Engineering and Computer Science, Seoul National University (SNU), Seoul, South Korea, in 1996 and 1998, respectively, and the Ph.D. degree from the Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX, USA, in 2006. He is currently a Professor with the Department of Electrical and Computer Engineering, SNU. From February 2007 to February 2020, he was a Professor with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. From 1998 to 2003, he was a Senior Member of the Technical Staff of the R&D Division of KT, South Korea, where he researched 3G CDMA systems.
He was the recipient of the IEEE Vehicular Technology Society Jack Neubauer Memorial Award (Best System Paper Award) in 2002, the IEEE Vehicular Technology Society Dan Noble Fellowship Award in 2006, the IEEE Communication Society Asia Pacific Young Researcher Award in 2007, the Haedong Young Scholar Award from KICS in 2012, and the Irwin-Jacobs Award from Qualcomm and KICS in 2015. While with the University of Texas at Austin, he was the recipient of William S. Livingston Graduate Fellowship and Information and Telecommunication Fellowship from the Ministry of Information and Communication, South Korea. From December 2014 to June 2019, he was an Executive Editor and since July 2019, has been the Executive Editor Chair of the IEEE Transactions on Wireless Communications. He is also the Editor of the IEEE Transactions on Vehicular Technology and was the Editor of the IEEE Transactions on Wireless Communications from 2009 to 2014, of the IEEE Wireless Communications Letters from 2012 to 2017, and the Guest Editor of the 5G Wireless Communication System special issue of the IEEE Journal on Selected Areas in Communications. He is a Fellow of the IEEE (recommended by IEEE Communication Society) for the contribution to the analysis and design of multicell communication systems and currently is a Member of Fellow Evaluation Committee, IEEE Vehicular Technology Society.View more

References

References is not available for this document.