TY - GEN
T1 - Energy-efficient power allocation for secure communications in large-scale MIMO relaying systems
AU - Chen, Jian
AU - Chen, Xiaoming
AU - Liu, Tao
AU - Lei, Lei
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2015/1/12
Y1 - 2015/1/12
N2 - In this paper, we address the problem of energy-efficient power allocation for secure communications in an amplify-and-forward (AF) large-scale multiple-input multiple-output (LS-MIMO) relaying system in presence of a passive eavesdropper. The benefits of an AF LS-MIMO relay are exploited to significantly improve the secrecy performance, especially the secrecy energy efficiency (bit per Joule). We first analyze the impact of transmit power at the relay on the secrecy outage capacity, and prove that the secrecy outage capacity is a concave function of transmit power under very practical assumptions, i.e. no eavesdropper channel state information (CSI) and imperfect legitimate CSI. Then, we propose an energy-efficient power allocation scheme to maximize the secrecy energy efficiency. Finally, simulation results validate the advantage of the proposed energy-efficient scheme compared to the capacity maximization scheme.
AB - In this paper, we address the problem of energy-efficient power allocation for secure communications in an amplify-and-forward (AF) large-scale multiple-input multiple-output (LS-MIMO) relaying system in presence of a passive eavesdropper. The benefits of an AF LS-MIMO relay are exploited to significantly improve the secrecy performance, especially the secrecy energy efficiency (bit per Joule). We first analyze the impact of transmit power at the relay on the secrecy outage capacity, and prove that the secrecy outage capacity is a concave function of transmit power under very practical assumptions, i.e. no eavesdropper channel state information (CSI) and imperfect legitimate CSI. Then, we propose an energy-efficient power allocation scheme to maximize the secrecy energy efficiency. Finally, simulation results validate the advantage of the proposed energy-efficient scheme compared to the capacity maximization scheme.
UR - https://www.scopus.com/pages/publications/84922569391
U2 - 10.1109/ICCChina.2014.7008307
DO - 10.1109/ICCChina.2014.7008307
M3 - Conference contribution
AN - SCOPUS:84922569391
T3 - 2014 IEEE/CIC International Conference on Communications in China, ICCC 2014
SP - 385
EP - 390
BT - 2014 IEEE/CIC International Conference on Communications in China, ICCC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE/CIC International Conference on Communications in China, ICCC 2014
Y2 - 13 October 2014 through 15 October 2014
ER -
