Signal Quality
Signal quality estimation is not strictly a synchronization algorithm, but a network performance issue. WLAN systems define several data rates that can be used to transmit data; thus, to achieve the best overall network performance, data should be transmitted on the highest rate that can be reliably transmitted under the current channel conditions. For the transmitter to be able to decide what data rate to use, an accurate estimate of the quality of the channel has to be available. This is the task of the signal quality algorithm.
The double sliding window algorithm showed how its output could be used to estimate the received SNR in Equation 2.7. This is a quite simple method if the receiver implements the double sliding window ...
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