NDLI: On the joint power and rate optimization in multihop relay networks with HARQ

Content Provider	IEEE Xplore Digital Library
Author	Seong Hwan Kim Bang Chul Jung
Copyright Year	2013
Description	Author affiliation: Dept. of Inf. & Commun. Eng., Gyeongsang Nat. Univ., Tongyeong, South Korea (Seong Hwan Kim; Bang Chul Jung)
Abstract	We consider a linear multihop relay network adopting Chase-combining type Hybrid ARQ strategy in Rayleigh fading channels. The total number of (re)transmissions is assumed to be not limited, i.e., we consider delay-tolerant applications. We aim at maximizing the average throughput by jointly optimizing the transmit powers and data rates over all hops, while limiting the sum of transmit powers of all nodes. However, it is hard to find the jointly optimal power allocation and rate selection strategy in this problem. In this paper, we propose an iterative algorithm in order to obtain the optimal transmit powers and transmission rates for all the nodes including source and relays. Numerical results show that the proposed algorithm which controls both power and rate yields the best throughput performance among the conventional link adaptation schemes including the schemes that adapt either power or rate.
Starting Page	1406
Ending Page	1410
File Size	264524
Page Count	5
File Format	PDF
ISBN	9781467362351
ISSN	21669570
DOI	10.1109/PIMRC.2013.6666361
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-08
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Throughput Spread spectrum communication Joints Wireless communication Fading Resource management rate selection Multihop relay networks HARQ Chase combining power control
Content Type	Text
Resource Type	Article

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