Rate allocation for HARQ in relay-based cooperative transmission

Author

Khosravirad, Saeed R. ; Szczecinski, Leszek ; Labeau, Fabrice

Author_Institution

Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada

fYear

2014

fDate

6-9 April 2014

Firstpage

2757

Lastpage

2762

Abstract

We analyze HARQ transmission over a fading channel with the help of a relay node. In the absence of the channel state information (CSI) at the transmitters, we establish the problem of maximizing the overall throughput of HARQ transmission by optimizing the variable transmission rate. We present a closed form of the throughput with respect to the transmission rates and use the well-known Dynamic Programming technique along with the necessary simplifications on the problem to find the optimal set of transmission rates for both the Source node and the Relay node in source-relay-destination scenario. We show that such an approach yields a significant increase in throughput compared to fixed-rate HARQ.

Keywords

automatic repeat request; cooperative communication; dynamic programming; fading channels; protocols; relay networks (telecommunication); CSI; HARQ transmission analysis; channel state information; dynamic programming technique; fading channel; hybrid automatic repeat request; overall throughput maximization problem; rate allocation; relay node; relay-based cooperative transmission; source node; source-relay-destination scenario; variable transmission rate optimization; Decision support systems; Mobile communication; Mobile computing; Silicon; Wireless networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2014 IEEE

Conference_Location

Istanbul

Type

conf

DOI

10.1109/WCNC.2014.6952865

Filename

6952865