TY - GEN
T1 - The multiple-relay channel with estimate-and-forward relaying
AU - Dabora, Ron
AU - Servetto, Sergio D.
PY - 2007/12/1
Y1 - 2007/12/1
N2 - In this paper we consider the multiple-relay channel. For this scenario there are two well known results: the decode-and-forward (DAF) result of [Xie and Kumar, 2005] and the estimate-and forward (EAF) result of [Kramer et al., 2005]. However, the FAF result does not lend itself to numerical evaluation due to the large number of parameters to be determined and the non-convex nature of the optimization problem for finding the maximum rate. Therefore, for a given channel we cannot tell what is the EAF rate while keeping the expressions in their general form. We propose a specific assignment for the FAF auxiliary variables that satisfy the feasibility constraints and allow us to obtain an explicit EAF-based rate expression. This expression can be easily computed, and compared against the DAF-based rate. We give an example of a channel where this FAF rate is superior to both the DA F and the point-to-point rates.
AB - In this paper we consider the multiple-relay channel. For this scenario there are two well known results: the decode-and-forward (DAF) result of [Xie and Kumar, 2005] and the estimate-and forward (EAF) result of [Kramer et al., 2005]. However, the FAF result does not lend itself to numerical evaluation due to the large number of parameters to be determined and the non-convex nature of the optimization problem for finding the maximum rate. Therefore, for a given channel we cannot tell what is the EAF rate while keeping the expressions in their general form. We propose a specific assignment for the FAF auxiliary variables that satisfy the feasibility constraints and allow us to obtain an explicit EAF-based rate expression. This expression can be easily computed, and compared against the DAF-based rate. We give an example of a channel where this FAF rate is superior to both the DA F and the point-to-point rates.
UR - http://www.scopus.com/inward/record.url?scp=51649111207&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2007.4557087
DO - 10.1109/ISIT.2007.4557087
M3 - Conference contribution
AN - SCOPUS:51649111207
SN - 1424414296
SN - 9781424414291
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 276
EP - 280
BT - Proceedings - IEEE International Symposium on Information Theory, ISIT 2007
T2 - 2007 IEEE International Symposium on Information Theory, ISIT 2007
Y2 - 24 June 2007 through 29 June 2007
ER -