TY - GEN
T1 - Improved rate-equivocation regions for secure cooperative communication
AU - Marina, Ninoslav
AU - Yagi, Hideki
AU - Poor, H. Vincent
PY - 2011
Y1 - 2011
N2 - A simple four node network in which cooperation improves the information-theoretic secrecy is studied. The channel consists of two senders, a receiver, and an eavesdropper. One or both senders transmit confidential messages to the receiver, while the eavesdropper tries to decode the transmitted message. The main result is the derivation of a newly achievable rate-equivocation region that is shown to be larger than a rate-equivocation region derived by Lai and El Gamal for the relay-eavesdropper channel. When the rate of the helping interferer is zero, the new rate-equivocation region reduces to the capacity-equivocation region over the wire-tap channel; hence, the new achievability scheme can be seen as a generalization of a coding scheme proposed by Csiszár and Körner.
AB - A simple four node network in which cooperation improves the information-theoretic secrecy is studied. The channel consists of two senders, a receiver, and an eavesdropper. One or both senders transmit confidential messages to the receiver, while the eavesdropper tries to decode the transmitted message. The main result is the derivation of a newly achievable rate-equivocation region that is shown to be larger than a rate-equivocation region derived by Lai and El Gamal for the relay-eavesdropper channel. When the rate of the helping interferer is zero, the new rate-equivocation region reduces to the capacity-equivocation region over the wire-tap channel; hence, the new achievability scheme can be seen as a generalization of a coding scheme proposed by Csiszár and Körner.
KW - Information-theoretic secrecy
KW - cooperative communication
KW - eavesdropper channel
KW - perfect secrecy
KW - physical layer security
KW - rate-equivocation region
KW - secrecy capacity
KW - wire-tap channel
UR - http://www.scopus.com/inward/record.url?scp=80054807535&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80054807535&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2011.6034100
DO - 10.1109/ISIT.2011.6034100
M3 - Conference contribution
AN - SCOPUS:80054807535
SN - 9781457705953
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2871
EP - 2875
BT - 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
T2 - 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
Y2 - 31 July 2011 through 5 August 2011
ER -