Analysis of Various Parameters for Link Adaptation in Wireless Transmission

Choosing a correct parameter from RSSI, SINR, PDR, and BER to estimate status of the wireless link is of paramount importance for link adaptation. RSSI may not point out interference effectively, whereas SINR thresholds are hardware dependant and require calibration. PDR and BER are measurable metrics with many considerations. It may project wrong status of link quality if not analyzed properly. Since reception of erroneous packet is frequent in wireless domain, cause has to be pinpointed accurately for pertinent remedial action. But two different causes require two different corrective actions, exponential back off for collisions, and change of transmission data rate or power for signal attenuation.

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