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In modern wireless networks, the signal quality in wireless channel is estimated based on the channel quality measurements. The measurement results are used to select appropriate modulation and coding scheme for each transmission. The target of the link adaptation is to reach the desired block error rate operation point. Operation point and system performance could potentially be compromised by non-consistent / biased channel quality indicator reporting caused by, e.g., differently calibrated user equipments or hardware inaccuracies.
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