Secure Massive MIMO under Imperfect CSI: Performance Analysis and Channel Prediction

Tinghan Yang; Rongqing Zhang; Xiang Cheng; Liuqing Yang

doi:10.1109/TIFS.2018.2883150

Secure Massive MIMO under Imperfect CSI: Performance Analysis and Channel Prediction

Tinghan Yang, Rongqing Zhang, Xiang Cheng, Liuqing Yang

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

In recent years, physical layer security has been regarded as a promising technique to facilitate secure communications in next generation mobile systems, where theoretically massive MIMO can significantly enhance the system secrecy performance under its advantage in shaping the transmitted signals to null the interference or leakage. However, in practical systems, the achievable secrecy performance under imperfect channel state information (CSI) deserves further investigation. In this paper, we give a detailed analysis about the physical layer security problem in a multi-user massive MIMO system with imperfect CSI. The considered imperfect CSI includes both the outdated CSI due to the transmission and processing delay, and the channel estimation error. We first derive a tight asymptotic lower bound of the ergodic system secrecy capacity under imperfect CSI, and then analyze how imperfect CSI affects the system secrecy performance. Moreover, we propose a channel prediction scheme that can result in more accurate CSI, in order to alleviate the negative effect on the achievable system secrecy capacity caused by imperfect CSI. Simulation results reveal that the imperfect CSI greatly reduces the system secrecy capacity, while our designed channel prediction scheme can effectively mitigate the harmful impact of imperfect CSI and thus improve the system secrecy performance.

Original language	English (US)
Article number	8543651
Pages (from-to)	1610-1623
Number of pages	14
Journal	IEEE Transactions on Information Forensics and Security
Volume	14
Issue number	6
DOIs	https://doi.org/10.1109/TIFS.2018.2883150
State	Published - Jun 2019
Externally published	Yes

Bibliographical note

Funding Information:
Manuscript received February 15, 2018; revised June 26, 2018 and September 15, 2018; accepted October 28, 2018. Date of publication November 23, 2018; date of current version March 7, 2019. This work was supported in part by the National Natural Science Foundation of China under Grant 61622101 and Grant 61571020, in part by the Ministry National Key Research and Development Project under Grant 2017YFE0121400, in part by the National Science and Technology Major Project under Grant 2018ZX03001031, and in part by the Major Project from Beijing Municipal Science and Technology Commission under Grant Z181100003218007. The associate editor coordinating the review of this manuscript and approving it for publication was Prof. Georges Kaddoum. (Corresponding author: Xiang Cheng.) T. Yang and X. Cheng are with the State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China (e-mail: [email protected]; [email protected]).

Funding Information:
This work was supported in part by the National Natural Science Foundation of China under Grant 61622101 and Grant 61571020, in part by the Ministry National Key Research and Development Project under Grant 2017YFE0121400, in part by the National Science and Technology Major Project under Grant 2018ZX03001031, and in part by the Major Project from Beijing Municipal Science and Technology Commission under Grant Z181100003218007.

Publisher Copyright:
© 2018 IEEE.

Keywords

Massive MIMO
channel prediction
imperfect CSI
physical layer security

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10.1109/TIFS.2018.2883150

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title = "Secure Massive MIMO under Imperfect CSI: Performance Analysis and Channel Prediction",

abstract = "In recent years, physical layer security has been regarded as a promising technique to facilitate secure communications in next generation mobile systems, where theoretically massive MIMO can significantly enhance the system secrecy performance under its advantage in shaping the transmitted signals to null the interference or leakage. However, in practical systems, the achievable secrecy performance under imperfect channel state information (CSI) deserves further investigation. In this paper, we give a detailed analysis about the physical layer security problem in a multi-user massive MIMO system with imperfect CSI. The considered imperfect CSI includes both the outdated CSI due to the transmission and processing delay, and the channel estimation error. We first derive a tight asymptotic lower bound of the ergodic system secrecy capacity under imperfect CSI, and then analyze how imperfect CSI affects the system secrecy performance. Moreover, we propose a channel prediction scheme that can result in more accurate CSI, in order to alleviate the negative effect on the achievable system secrecy capacity caused by imperfect CSI. Simulation results reveal that the imperfect CSI greatly reduces the system secrecy capacity, while our designed channel prediction scheme can effectively mitigate the harmful impact of imperfect CSI and thus improve the system secrecy performance.",

keywords = "Massive MIMO, channel prediction, imperfect CSI, physical layer security",

author = "Tinghan Yang and Rongqing Zhang and Xiang Cheng and Liuqing Yang",

note = "Funding Information: Manuscript received February 15, 2018; revised June 26, 2018 and September 15, 2018; accepted October 28, 2018. Date of publication November 23, 2018; date of current version March 7, 2019. This work was supported in part by the National Natural Science Foundation of China under Grant 61622101 and Grant 61571020, in part by the Ministry National Key Research and Development Project under Grant 2017YFE0121400, in part by the National Science and Technology Major Project under Grant 2018ZX03001031, and in part by the Major Project from Beijing Municipal Science and Technology Commission under Grant Z181100003218007. The associate editor coordinating the review of this manuscript and approving it for publication was Prof. Georges Kaddoum. (Corresponding author: Xiang Cheng.) T. Yang and X. Cheng are with the State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China (e-mail: [email protected]; [email protected]). Funding Information: This work was supported in part by the National Natural Science Foundation of China under Grant 61622101 and Grant 61571020, in part by the Ministry National Key Research and Development Project under Grant 2017YFE0121400, in part by the National Science and Technology Major Project under Grant 2018ZX03001031, and in part by the Major Project from Beijing Municipal Science and Technology Commission under Grant Z181100003218007. Publisher Copyright: {\textcopyright} 2018 IEEE.",

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N2 - In recent years, physical layer security has been regarded as a promising technique to facilitate secure communications in next generation mobile systems, where theoretically massive MIMO can significantly enhance the system secrecy performance under its advantage in shaping the transmitted signals to null the interference or leakage. However, in practical systems, the achievable secrecy performance under imperfect channel state information (CSI) deserves further investigation. In this paper, we give a detailed analysis about the physical layer security problem in a multi-user massive MIMO system with imperfect CSI. The considered imperfect CSI includes both the outdated CSI due to the transmission and processing delay, and the channel estimation error. We first derive a tight asymptotic lower bound of the ergodic system secrecy capacity under imperfect CSI, and then analyze how imperfect CSI affects the system secrecy performance. Moreover, we propose a channel prediction scheme that can result in more accurate CSI, in order to alleviate the negative effect on the achievable system secrecy capacity caused by imperfect CSI. Simulation results reveal that the imperfect CSI greatly reduces the system secrecy capacity, while our designed channel prediction scheme can effectively mitigate the harmful impact of imperfect CSI and thus improve the system secrecy performance.

AB - In recent years, physical layer security has been regarded as a promising technique to facilitate secure communications in next generation mobile systems, where theoretically massive MIMO can significantly enhance the system secrecy performance under its advantage in shaping the transmitted signals to null the interference or leakage. However, in practical systems, the achievable secrecy performance under imperfect channel state information (CSI) deserves further investigation. In this paper, we give a detailed analysis about the physical layer security problem in a multi-user massive MIMO system with imperfect CSI. The considered imperfect CSI includes both the outdated CSI due to the transmission and processing delay, and the channel estimation error. We first derive a tight asymptotic lower bound of the ergodic system secrecy capacity under imperfect CSI, and then analyze how imperfect CSI affects the system secrecy performance. Moreover, we propose a channel prediction scheme that can result in more accurate CSI, in order to alleviate the negative effect on the achievable system secrecy capacity caused by imperfect CSI. Simulation results reveal that the imperfect CSI greatly reduces the system secrecy capacity, while our designed channel prediction scheme can effectively mitigate the harmful impact of imperfect CSI and thus improve the system secrecy performance.

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Secure Massive MIMO under Imperfect CSI: Performance Analysis and Channel Prediction

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