TY - GEN
T1 - Power allocation strategy using node cooperation for transmit power minimization under correlated fading
AU - Ghose, Sarbani
AU - Bose, Ranjan
PY - 2013
Y1 - 2013
N2 - Achieving security at the physical layer in the presence of eavesdropper has always remained a critical issue under adverse channel conditions. The present scenario has relay with multiple antenna to combat channel effects. We have designed system model so that the nodes cooperate among themselves for the available power, with the aim to minimize the total transmit power, under a secrecy rate constraint. Here the relay sends out a jamming signal in order to confuse the eavesdropper. We assume correlated fading in the relay channels. The channel is modeled taking into account the large scale fading and small scale fading as well, through inclusion of path loss exponent and Rayleigh fading effects. The optimal power requirements for the source and the jammers are determined subject to the constraint of secrecy rate. The power allocation also depends upon path loss exponent, distance and fading parameters. The corresponding relaying regions have been plotted for real, equal and real, unequal roots of source power. Real, equal roots of source power are independent of position of relay. From the simulations we observe that the region expands when relays are away from the source.
AB - Achieving security at the physical layer in the presence of eavesdropper has always remained a critical issue under adverse channel conditions. The present scenario has relay with multiple antenna to combat channel effects. We have designed system model so that the nodes cooperate among themselves for the available power, with the aim to minimize the total transmit power, under a secrecy rate constraint. Here the relay sends out a jamming signal in order to confuse the eavesdropper. We assume correlated fading in the relay channels. The channel is modeled taking into account the large scale fading and small scale fading as well, through inclusion of path loss exponent and Rayleigh fading effects. The optimal power requirements for the source and the jammers are determined subject to the constraint of secrecy rate. The power allocation also depends upon path loss exponent, distance and fading parameters. The corresponding relaying regions have been plotted for real, equal and real, unequal roots of source power. Real, equal roots of source power are independent of position of relay. From the simulations we observe that the region expands when relays are away from the source.
KW - correlated fading
KW - node cooperation
KW - optimal power allocation
KW - path loss exponent
KW - physical layer security
UR - http://www.scopus.com/inward/record.url?scp=84894408254&partnerID=8YFLogxK
U2 - 10.1109/NCC.2013.6487960
DO - 10.1109/NCC.2013.6487960
M3 - Conference contribution
AN - SCOPUS:84894408254
SN - 9781467359528
T3 - 2013 National Conference on Communications, NCC 2013
BT - 2013 National Conference on Communications, NCC 2013
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2013 National Conference on Communications, NCC 2013
Y2 - 15 February 2013 through 17 February 2013
ER -