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Network coding schemes for D2D communications based relaying for cellular coverage extension
2015 (engelsk)Inngår i: European transactions on telecommunications, ISSN 1124-318X, E-ISSN 2161-3915, Vol. -Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Although network-assisted device-to-device (D2D) communications are known to improve the spectral and energy efficiency of proximal communications, the performance of cooperative D2D schemes in licenced spectrum is less understood when employed to extend the coverage of cellular networks. In this paper, we study the performance of D2D-based range extension in terms of sum rate and power efficiency when a relaying user equipment (UE) helps to improve the coverage for cell edge UEs. In our design, the relaying UE may have own traffic to transmit and receive to/from the cellular base station (BS) and can operate either in amplify-and-forward (AF) or decode-and-forward (DF) modes and can make use of either digital or analogue physical (PHY) layer network coding. In this rather general setting, we propose mode selection, resource allocation and power control schemes and study their performance by means of system simulations. We find that the performance of the DF scheme with network coding is superior both to the traditional cellular and the AF-based relaying schemes, including AF with two-slot or three-slot PHY layer network coding.

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European transactions on Telecommunications , 2015. Vol. -
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URN: urn:nbn:se:kth:diva-201159DOI: 10.1002/ett.2994ISI: 000396979400002Scopus ID: 2-s2.0-84949238850OAI: oai:DiVA.org:kth-201159DiVA, id: diva2:1082178
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ScopusID: 84949238850. QC 20170316

Tilgjengelig fra: 2017-03-15 Laget: 2017-03-15 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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Fodor, G
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