What is FHSS?
Short for Frequency Hopping Spread Spectrum . Frequency hopping techniques, where in the transmitter jumps from subchannel to subchannel at a rapid pace, were first used by the US military. The military started using such techniques because they are difficult to intentionally jam and, unless you know the frequency hopping sequence, practically impossible to listen in on. As it turns out, spread spectrum techniques are useful for civilian applications as well. Spread spectrum techniques have two main advantages. First, they are more resistant to interference than conventional systems. Second, they can be used to provide multiple access functionality.
