Guard Interval
In telecommunications, guard intervals are used to ensure that distinct transmissions do not interfere with one another. These transmissions may belong to different users (as in TDMA) or to the same user (as in OFDM).
The purpose of the guard interval is to introduce immunity to propagation delays, echoes and reflections, to which digital data is normally very sensitive.
Read more about Guard Interval: Guard Interval Use in Digital Communications Systems, 802.11 Guard Interval, Teleport's
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