TY - GEN
T1 - Beam-Domain Secret Key Generation for Multi-User Massive MIMO Networks
AU - Chen, You
AU - Li, Guyue
AU - Sun, Chen
AU - Zhang, Junqing
AU - Jorswieck, Eduard
AU - Xiao, Bin
N1 - Funding Information:
ACKNOWLEDGMENT This research was supported by the NSFC (61801115), the Zhishan Youth Scholar Program Of SEU, the Research Fund of National Mobile Communications Research LaboratorySouth-east University (No.2019B01) and the Fundamental Research Funds for the Central Universities (3204009415, 3209019405). The work of E. Jorswieck is partly funded by the German Research Foundation (DFG) under project JO 801/21-1. The work of B. Xiao is partly funded by the NSFC (61772446).
Publisher Copyright:
© 2020 IEEE.
PY - 2020/6
Y1 - 2020/6
N2 - Physical-layer key generation (PKG) in multi-user massive MIMO networks faces great challenges due to the large length of pilots and the high dimension of channel matrix. To tackle these problems, we propose a novel massive MIMO key generation scheme with pilot reuse based on the beam domain channel model and derive close-form expression of secret key rate. Specifically, we present two algorithms, i.e., beam-domain based channel probing (BCP) algorithm and interference neutralization based multi-user beam allocation (IMBA) algorithm for the purpose of channel dimension reduction and multi-user pilot reuse, respectively. Numerical results verify that the proposed PKG scheme can achieve the secret key rate that approximates the perfect case, and significantly reduce the dimension of the channel estimation and pilot overhead.
AB - Physical-layer key generation (PKG) in multi-user massive MIMO networks faces great challenges due to the large length of pilots and the high dimension of channel matrix. To tackle these problems, we propose a novel massive MIMO key generation scheme with pilot reuse based on the beam domain channel model and derive close-form expression of secret key rate. Specifically, we present two algorithms, i.e., beam-domain based channel probing (BCP) algorithm and interference neutralization based multi-user beam allocation (IMBA) algorithm for the purpose of channel dimension reduction and multi-user pilot reuse, respectively. Numerical results verify that the proposed PKG scheme can achieve the secret key rate that approximates the perfect case, and significantly reduce the dimension of the channel estimation and pilot overhead.
KW - beam domain
KW - multi-user massive MIMO
KW - Physical layer security
KW - secret key generation
UR - http://www.scopus.com/inward/record.url?scp=85089408570&partnerID=8YFLogxK
U2 - 10.1109/ICC40277.2020.9149130
DO - 10.1109/ICC40277.2020.9149130
M3 - Conference article published in proceeding or book
AN - SCOPUS:85089408570
T3 - IEEE International Conference on Communications
SP - 1
EP - 6
BT - 2020 IEEE International Conference on Communications, ICC 2020 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE International Conference on Communications, ICC 2020
Y2 - 7 June 2020 through 11 June 2020
ER -