Mobility

Adaptive Algorithm for Mapping Channel Quality Information to Modulation and Coding Schemes

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Executive Summary

In the present and future generation of wireless networks, link adaptation is used for better channel efficiency. With link adaptation the modulation and coding scheme used for transmissions to a particular user is adjusted based on the user's channel conditions. However, because of delays and measurement errors in the reported channel quality information, the actual transmission may experience a significantly different channel than anticipated. This can either lead to transmission errors (if the channel has deteriorated) or wasted transmission resources (if the channel is actually better than predicted).

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