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2009
IEEE

Downlink OFDMA Resource Allocation Under Partial Channel State Information

8 years 11 months ago
Downlink OFDMA Resource Allocation Under Partial Channel State Information
Abstract— The problem of resource allocation (RA) in a downlink OFDMA system is examined under the realistic assumption of imperfect channel state information (CSI) at the base station. In this case, there is a nonzero outage probability that the assigned rate at a particular subcarrier/user pair will not be supported by the true channel realization, which may lead to a significant waste of the system’s available resources. It is therefore necessary to obtain RA algorithms that take into account the effect of imperfect CSI. By exploiting the statistical description of the imperfect CSI, various algorithms are proposed that tradeoff complexity versus performance, aiming at maximizing the system’s successfully transmitted rate.
Stelios Stefanatos, Nikos Dimitriou
Added 21 May 2010
Updated 21 May 2010
Type Conference
Year 2009
Where ICC
Authors Stelios Stefanatos, Nikos Dimitriou
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