TY - GEN
T1 - A broadcast approach to robust communications over unreliable multi-relay networks
AU - Simeone, Osvaldo
AU - Somekh, Oren
AU - Erkip, Elza
AU - Poor, H. Vincent
AU - Shamai, Shlomo
PY - 2009
Y1 - 2009
N2 - A multi-relay network is studied in which communication from source to relays takes place over a Gaussian broadcast channel, while the relays are connected to the receiver via orthogonal finite-capacity links. Unbeknownst to the source and relays, link failures may take place between any subset of relays and the destination in a non-ergodic fashion. Upper and lower bounds are derived on average achievable rates with respect to the prior distribution of the link failures. It is first assumed that relays are oblivious to the codebook shared by source and destination, and then the results are extended to the nonoblivious case. The lower bounds are obtained via strategies that combine the broadcast coding approach, previously investigated for quasi-static fading channels, and different robust distributed compression techniques.
AB - A multi-relay network is studied in which communication from source to relays takes place over a Gaussian broadcast channel, while the relays are connected to the receiver via orthogonal finite-capacity links. Unbeknownst to the source and relays, link failures may take place between any subset of relays and the destination in a non-ergodic fashion. Upper and lower bounds are derived on average achievable rates with respect to the prior distribution of the link failures. It is first assumed that relays are oblivious to the codebook shared by source and destination, and then the results are extended to the nonoblivious case. The lower bounds are obtained via strategies that combine the broadcast coding approach, previously investigated for quasi-static fading channels, and different robust distributed compression techniques.
UR - http://www.scopus.com/inward/record.url?scp=70349280461&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349280461&partnerID=8YFLogxK
U2 - 10.1109/ITA.2009.5044965
DO - 10.1109/ITA.2009.5044965
M3 - Conference contribution
AN - SCOPUS:70349280461
SN - 9781424439904
T3 - Information Theory and Applications Workshop, ITA 2009
SP - 334
EP - 340
BT - Information Theory and Applications Workshop, ITA 2009
PB - IEEE Computer Society
T2 - Information Theory and Applications Workshop, ITA 2009
Y2 - 8 February 2009 through 13 February 2009
ER -