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Title: Energy-efficient resource allocation in cooperative OFDMA systems
Authors: Sökmen, Fatma İrem
Girici, Tolga
Issue Date: 2010
Source: 5th Annual International Wireless Internet Conference, WICON 2010, 1 March 2010 through 3 March 2010, Singapore, 80386
Abstract: In this work we study framed transmission in an OFDMA based relayed wireless access system that utilize cooperative diversity. We consider a system of a source, a relay and a number of destination nodes, where the nodes can combine the signals coming from the source and relay. We are interested in the case that the source and relay only have the information of path loss and slow fading. The goal in resource allocation is to allocate resources (time slots, subchannels and power) in an energy efficient manner given target rates and target outage probability. Numerical results show that cooperative relaying requires significantly less energy than noncooperative relaying. Adjusting the source and relay transmission durations has a marginal effect on the performance, although it results in a significant increase in complexity.
ISBN: 9789639799868
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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