Title :
Goodput maximization in cooperative networks with ARQ
Author :
Chen, Qing ; Gursoy, Mustafa Cenk
Author_Institution :
Dept. of Electr. Eng., Univ. of Nebraska-Lincoln, Lincoln, NE, USA
Abstract :
In this paper, the average successful throughput, i.e., goodput, of a coded 3-node cooperative network is studied in a Rayleigh fading environment. It is assumed that a simple automatic repeat request (ARQ) technique is employed in the network so that erroneously received packets are retransmitted until successful delivery. The relay is assumed to operate in either amplify-and-forward (AF) or decode-and-forward (DF) mode. Under these assumptions, retransmission mechanisms and protocols are described, and the average time required to send information successfully is determined. Subsequently, the goodput for both AF and DF relaying is formulated. The tradeoffs and interactions between the goodput, transmission rates, and relay location are investigated and optimal strategies are identified.
Keywords :
Rayleigh channels; amplify and forward communication; automatic repeat request; cooperative communication; decode and forward communication; protocols; 3-node cooperative network; ARQ; Rayleigh fading environment; amplify-and-forward mode; automatic repeat request technique; decode-and-forward mode; goodput maximization; protocols; relay location; retransmission mechanisms; transmission rates; Automatic repeat request;
Conference_Titel :
Information Sciences and Systems (CISS), 2011 45th Annual Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-9846-8
Electronic_ISBN :
978-1-4244-9847-5
DOI :
10.1109/CISS.2011.5766172
