NDLI: Joint Power and Bandwidth Allocation in Multihop Wireless Networks

Content Provider	IEEE Xplore Digital Library
Author	Deqiang Chen Laneman, J.N.
Copyright Year	2008
Description	Author affiliation: Univ. of Notre Dame Notre Dame, Notre Dame (Deqiang Chen; Laneman, J.N.)
Abstract	This paper considers power and bandwidth allocation to maximize the end-to-end rate in a multihop wireless network. Assuming an orthogonal frequency division multiplexing (OFDM) system, we formulate an optimization problem for joint power and subcarrier allocation in a network with one destination and multiple sources and relays. We then focus on low-complexity algorithms for the special case of a multihop network with only one source. In particular, we develop an algorithm for a two-hop network based upon the observation that the optimal frequency allocation in a two-hop network has a two-band structure under certain conditions. For a network with more than two hops, we propose a greedy approach to subcarrier allocation. Simulation results suggest that the performance of the proposed algorithms closely follow the optimum performance. Moreover, our results suggest that more hops do not always improve the end-to-end spectral efficiency for frequency-selective fading channels.
Starting Page	990
Ending Page	995
File Size	145036
Page Count	6
File Format	PDF
ISBN	9781424419975
ISSN	15253511
DOI	10.1109/WCNC.2008.180
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel allocation Spread spectrum communication Wireless networks OFDM Relays Radio spectrum management Power system relaying Bandwidth Intersymbol interference Interference constraints
Content Type	Text
Resource Type	Article

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