First-hop-quality-aware dynamic resource allocation for amplify-and-forward opportunistic relaying assisted SC-FDMA
Zhang, Jiayi, Yang, Lie-Liang and Hanzo, Lajos (2012) First-hop-quality-aware dynamic resource allocation for amplify-and-forward opportunistic relaying assisted SC-FDMA. In, IEEE International Conference on Communications (ICC 2012), Ottawa, CA, 10 - 15 Jun 2012. 6pp.
In this paper we exploit the beneﬁts of the diversity gains arising from a cluster of opportunistic relays (OR) and from the independently fading subcarriers of multiple users. Our goal is to improve the energy-efﬁciency of the OR assisted single-carrier frequency-division multiple-access (SC-FDMA) uplink using amplify-and-forward(AF), where the direct transmission (DT) link is unavailable. By assuming that the pilot aided channel quality information (CQI) of all the users may be exchanged amongst the cooperating relays, we propose two joint dynamic resource allocation (DRA) schemes based on the so-called ’ﬁrst-hop quality awareness’. Our results demonstrate that compared to the DT benchmark, the proposed joint DRA schemes are capable of achieving a power reduction of 10dB for a single-antenna base station (BS) receiver, albeit for a multi-antenna BS the power-reduction remains more modest.
|Item Type:||Conference or Workshop Item (Paper)|
|Subjects:||Q Science > QA Mathematics > QA75 Electronic computers. Computer science|
|Divisions:||Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
|Date Deposited:||22 Jun 2012 14:02|
|Last Modified:||29 May 2013 01:10|
|Contributors:||Zhang, Jiayi (Author)
Yang, Lie-Liang (Author)
Hanzo, Lajos (Author)
|Date:||10 June 2012|
|Further Information:||Google Scholar|
|ISI Citation Count:||0|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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