TY - JOUR
T1 - Achievable Secure Degrees of Freedom of K -User MISO Broadcast Channel with Imperfect CSIT
AU - Fan, Ye
AU - Liao, Xuewen
AU - Gao, Zhenzhen
AU - Leung, Victor C.M.
N1 - Publisher Copyright:
© 2012 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - In this letter, we derive the achievable secure degrees of freedom (SDoF) of K -user multiple-input single-output broadcast channel with imperfect channel state information (CSI) at the transmitter. With the help of an Nj -antenna external jammer, we propose a jamming rate splitting (J-RS) scheme to ensure the security of two wiretap models: 1) broadcast channel with confidential messages and 2) broadcast channel with an Ne -antenna external eavesdropper, where each legal node has no CSI of wiretap channels. Our converse is based on the degrees of freedom (DoF) of the network with secrecy constraints, and the achievability is based on J-RS. By numerical analysis, it indicates that the proposed scheme can achieve more SDoF than the traditional rate splitting scheme, zero forcing scheme, and jamming scheme, which can reach to the DoF of the network.
AB - In this letter, we derive the achievable secure degrees of freedom (SDoF) of K -user multiple-input single-output broadcast channel with imperfect channel state information (CSI) at the transmitter. With the help of an Nj -antenna external jammer, we propose a jamming rate splitting (J-RS) scheme to ensure the security of two wiretap models: 1) broadcast channel with confidential messages and 2) broadcast channel with an Ne -antenna external eavesdropper, where each legal node has no CSI of wiretap channels. Our converse is based on the degrees of freedom (DoF) of the network with secrecy constraints, and the achievability is based on J-RS. By numerical analysis, it indicates that the proposed scheme can achieve more SDoF than the traditional rate splitting scheme, zero forcing scheme, and jamming scheme, which can reach to the DoF of the network.
KW - achievable secure degrees of freedom
KW - imperfect CSIT
KW - jamming
KW - Physical layer security
KW - rate splitting
UR - http://www.scopus.com/inward/record.url?scp=85067681112&partnerID=8YFLogxK
U2 - 10.1109/LWC.2019.2900310
DO - 10.1109/LWC.2019.2900310
M3 - 文章
AN - SCOPUS:85067681112
SN - 2162-2337
VL - 8
SP - 933
EP - 936
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
IS - 3
M1 - 8645654
ER -