NDLI: Radio resource allocation for cooperative relay-assisted OFDMA wireless networks

Content Provider	IEEE Xplore Digital Library
Author	Zheng Chang Ristaniemi, T.
Copyright Year	2011
Description	Author affiliation: Department of Mathematical Information Technology, University of Jyväskylä, P.O.Box 35, FIN-40014 Finland (Zheng Chang; Ristaniemi, T.)
Abstract	This paper considers a wireless cooperative OFDMA network with a base station and some relays. The relays adopt the decode-and-forward protocol and can assist the transmission from base station to mobile stations. The objective is to maximize the system transmission rate of downlink under various constraints. The optimal solution for such radio resource allocation problem has high computational complexity. Thus we divide our solution scheme into three steps. The first step is to select the relay that can achieve best transmission rate. Then the subcarrier is distributed to the selected relays. For each hop, the same subcarrier should not be used. Next, power allocation is adopted under the individual power constraints for each node. Simulation studies are conducted to evaluate the system performance. It confirms that our proposed algorithm can enhance the performance compared with newly proposed resource allocation schemes.
Starting Page	1
Ending Page	5
File Size	204325
Page Count	5
File Format	PDF
ISBN	9781457715686
e-ISBN	9781457715709
e-ISBN	9781457715693
DOI	10.1109/IWCLD.2011.6123068
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-30
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM System performance Wireless networks relay selection OFDMA Resource management Relays power allocation and cooperative communications subcarrier allocation Optimization
Content Type	Text
Resource Type	Article

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