TY - GEN
T1 - Cognitive relaying with one-sided interference
AU - Sahin, Onur
AU - Erkip, Elza
PY - 2008
Y1 - 2008
N2 - We consider one-sided interference channel with two independent source-destination pairs, and a cognitive relay with only a link to the destination that observes interference. We first assume the relay non-causally obtains the signal messages (message cognitive) whereas the sources do not cooperate, and provide a general achievable rate region for the Gaussian case. We further analyze a more realistic set-up where instead of source messages, the relay knows the transmitted signals of both sources and is unaware of the codebooks. We investigate the achievable region under this signal cognitive assumption and further obtain a converse, thereby the capacity region under strong relay-interference conditions. Our results suggest that while relaying is usually utilized as an effective technique for boosting received signal quality, in the presence of interference, an equally important task of the relay is to manage the interference.
AB - We consider one-sided interference channel with two independent source-destination pairs, and a cognitive relay with only a link to the destination that observes interference. We first assume the relay non-causally obtains the signal messages (message cognitive) whereas the sources do not cooperate, and provide a general achievable rate region for the Gaussian case. We further analyze a more realistic set-up where instead of source messages, the relay knows the transmitted signals of both sources and is unaware of the codebooks. We investigate the achievable region under this signal cognitive assumption and further obtain a converse, thereby the capacity region under strong relay-interference conditions. Our results suggest that while relaying is usually utilized as an effective technique for boosting received signal quality, in the presence of interference, an equally important task of the relay is to manage the interference.
UR - http://www.scopus.com/inward/record.url?scp=70349659821&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349659821&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2008.5074496
DO - 10.1109/ACSSC.2008.5074496
M3 - Conference contribution
AN - SCOPUS:70349659821
SN - 9781424429417
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 689
EP - 694
BT - 2008 42nd Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2008
T2 - 2008 42nd Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2008
Y2 - 26 October 2008 through 29 October 2008
ER -