Client-centric fractional frequency reuse based on user cooperation in OFDMA networks

This paper proposes client-centric fractional frequency reuse (CC-FFR) techniques for interference mitigation in OFDMA-based cellular wireless networks. In this framework, clients exploit their peer-to-peer connectivity to bargain for spectrum by exchanging channel quality indicator (CQI) metrics wi...

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Bibliographic Details
Published in2008 42nd Annual Conference on Information Sciences and Systems pp. 95 - 100
Main Authors Geirhofer, S., Oyman, O.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.03.2008
Subjects
Base stations
Cellular networks
Frequency conversion
Interchannel interference
Interference constraints
Performance gain
Radio spectrum management
Radiofrequency interference
Resource management
Wireless networks
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Summary:This paper proposes client-centric fractional frequency reuse (CC-FFR) techniques for interference mitigation in OFDMA-based cellular wireless networks. In this framework, clients exploit their peer-to-peer connectivity to bargain for spectrum by exchanging channel quality indicator (CQI) metrics with the objective of jointly finding viable sub-channel allocations with low co-channel interference and high throughput. We analyze both the unconstrained case of greedily maximizing system capacity, as well as the fair case where optimization is performed subject to minimum rate constraints per user. Our numerical results, based on realistic channel propagation models and IEEE 802.16-based system parameters, show a promising performance gain that motivates to further investigate the potential of using user cooperation for co-channel interference mitigation.
ISBN:1424422469
9781424422463
DOI:10.1109/CISS.2008.4558502