December 2001
Intermediate to advanced
336 pages
8h 42m
English
Content preview from OFDM Wireless LANs: A Theoretical and Practical GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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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