TY - JOUR
T1 - User selection scheme with secrecy capacity in MIMO downlink systems
AU - Yanase, Masatoshi
AU - Ohtsuki, Tomoaki
PY - 2010
Y1 - 2010
N2 - For multiuser Multiple-Input-Multiple-Output (MIMO) downlink systems where some receivers exist, several user selection schemes have been recently proposed. However, these user selection schemes do not take security into consideration. One possible scenario of wireless communication systems is that a transmitter sends confidential messages to multiple receivers in the presence of eavesdroppers. In this paper, we propose a user selection scheme with secrecy capacity for multiuser MIMO downlink system. We assume a system with a transmitter, some legitimate users and eavesdroppers where the transmitter wants to send data securely against eavesdroppers. In the proposed scheme, the transmitter selects a user set so that their secrecy capacities among legitimate users and eavesdroppers are larger than zero. Thus, the transmitter can send confidential messages to users securely. The proposed scheme can be applied to conventional scheduling schemes, such as maximum capacity (MAX) scheduling and proportional fairness (PF) scheduling. Simulation results show that the proposed scheme provides secure transmissions and has little degradation of performance of system capacity and fairness when applied to the conventional scheduling schemes. Hence, we show that the proposed scheme is an effective user selection scheme to guarantee secrecy of communication.
AB - For multiuser Multiple-Input-Multiple-Output (MIMO) downlink systems where some receivers exist, several user selection schemes have been recently proposed. However, these user selection schemes do not take security into consideration. One possible scenario of wireless communication systems is that a transmitter sends confidential messages to multiple receivers in the presence of eavesdroppers. In this paper, we propose a user selection scheme with secrecy capacity for multiuser MIMO downlink system. We assume a system with a transmitter, some legitimate users and eavesdroppers where the transmitter wants to send data securely against eavesdroppers. In the proposed scheme, the transmitter selects a user set so that their secrecy capacities among legitimate users and eavesdroppers are larger than zero. Thus, the transmitter can send confidential messages to users securely. The proposed scheme can be applied to conventional scheduling schemes, such as maximum capacity (MAX) scheduling and proportional fairness (PF) scheduling. Simulation results show that the proposed scheme provides secure transmissions and has little degradation of performance of system capacity and fairness when applied to the conventional scheduling schemes. Hence, we show that the proposed scheme is an effective user selection scheme to guarantee secrecy of communication.
KW - Multiuser MIMO
KW - Secrecy capacity
KW - User selection
UR - http://www.scopus.com/inward/record.url?scp=77954973670&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954973670&partnerID=8YFLogxK
U2 - 10.1016/j.sbspro.2010.01.030
DO - 10.1016/j.sbspro.2010.01.030
M3 - Conference article
AN - SCOPUS:77954973670
VL - 2
SP - 161
EP - 170
JO - Procedia - Social and Behavioral Sciences
JF - Procedia - Social and Behavioral Sciences
SN - 1877-0428
IS - 1
T2 - 1st International Conference on Security Camera Network, Privacy Protection and Community Safety 2009, SPC2009
Y2 - 28 October 2009 through 30 October 2009
ER -