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Link adaptation is an important technique in achieving good system spectral efficiency. However, due to the effect of frequency selective fading, the SNRs of adjacent sub-carriers in an OFDMA system can potentially be different. To provide a reasonable signalling overhead, the smallest unit of channel quality feedback is represented in terms of a group of sub-carrier SNRs, or effective SNR for short...
A novel expression of the moment generating function (MGF) of the exponential effective SNR mapping (EESM) signal-to-noise ratio (SNR) over two correlated but not necessarily identically distributed Nakagami-m fading channels is presented. Based on the MGF, a novel expression for the average effective SNR is also presented. Numerical evaluation of these expressions shows that the proposed approach...
The PowerPoint presentation work has introduced a novel dynamic frequency planning approach to the frequency assignment problem tailored to OFDMA networks. DFP may decrease the inter-cell interference and increase the capacity of the network by dynamically adapting the radio frequency parameters to the specific scenario. DFP uses novel algorithms to sense the radio channel, and adapted versions of...
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