@inproceedings{5b798276b7e44cb38ff36c881fccc14f,
title = "Decode-and-forward cooperative diversity with power allocation in wireless networks",
abstract = "We study power allocation for the space-time-coded decode-and-forward cooperative diversity protocol in a wireless network under the assumption that only mean channel gains are available at the transmitters. In a Rayleigh fading channel with uniformly random node locations, a near-optimal power allocation that minimizes the outage probability is derived under a short-term power constraint, wherein the total power is fixed for each two-stage transmission. This near-optimal scheme allocates one half of the total power to the source node and splits the remaining half equally among selected relay nodes; a node is selected for relay if it is able to decode the signal from the source and its mean channel gain to the destination is above a threshold. Numerical results show that this scheme significantly outperforms the Constant-Power scheme, wherein all nodes use the same power at all times, and the Best-Select scheme, which employs one relay node with the largest mean relay-destination gain.",
author = "J. Luo and Blum, {R. S.} and Cimini, {L. J.} and Greenstein, {L. J.} and Haimovich, {A. M.}",
year = "2005",
doi = "10.1109/GLOCOM.2005.1578317",
language = "English (US)",
isbn = "0780394143",
series = "GLOBECOM - IEEE Global Telecommunications Conference",
pages = "3048--3052",
booktitle = "GLOBECOM'05",
note = "GLOBECOM'05: IEEE Global Telecommunications Conference, 2005 ; Conference date: 28-11-2005 Through 02-12-2005",
}