TY - GEN
T1 - Secrecy outage performance of MISO wiretap channels with outdated CSI
AU - Ferdinand, Nuwan S.
AU - Da Costa, Daniel Benevides
AU - De Almeida, Andre L.F.
AU - Latva-Aho, Matti
PY - 2014
Y1 - 2014
N2 - In this paper, the secrecy outage performance of a multiple-input single-output (MISO) wiretap channel is investigated. Different from previous works, we assume that the legitimate transmitter employs maximal-ratio transmission (MRT) beamforming scheme with outdated channel state information (CSI) of the main channel. A closed-form expression for the secrecy outage probability is derived, from which an asymptotic secrecy analysis is carried out. Furthermore, a closed-form expression for the probability of non-zero secrecy rate is derived. Our results are corroborated by Monte Carlo simulations and show that full diversity gain cannot be realized in the presence of outdated CSI. In addition, the MRT scheme is analytically compared with a transmit antenna selection scheme and the secrecy outage improvement is quantified.
AB - In this paper, the secrecy outage performance of a multiple-input single-output (MISO) wiretap channel is investigated. Different from previous works, we assume that the legitimate transmitter employs maximal-ratio transmission (MRT) beamforming scheme with outdated channel state information (CSI) of the main channel. A closed-form expression for the secrecy outage probability is derived, from which an asymptotic secrecy analysis is carried out. Furthermore, a closed-form expression for the probability of non-zero secrecy rate is derived. Our results are corroborated by Monte Carlo simulations and show that full diversity gain cannot be realized in the presence of outdated CSI. In addition, the MRT scheme is analytically compared with a transmit antenna selection scheme and the secrecy outage improvement is quantified.
UR - https://www.scopus.com/pages/publications/84906739559
U2 - 10.1109/ICCW.2014.6881296
DO - 10.1109/ICCW.2014.6881296
M3 - Conference contribution
AN - SCOPUS:84906739559
SN - 9781479946402
T3 - 2014 IEEE International Conference on Communications Workshops, ICC 2014
SP - 789
EP - 793
BT - 2014 IEEE International Conference on Communications Workshops, ICC 2014
PB - IEEE Computer Society
ER -