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Spectrum Stuff

What is Orthogonal signaling

Orthogonality relates to right angles. If you transmit two signals on the same frequency, they will interfere with each other unless they have a phase difference of 90º.

Orthogonal Frequency Division Multiplexing (OFDM) is used throughout modern WiFi. OFDM takes a specific channel and divides it into many sub carriers. By utilising sub carriers you are taking data which used to be transmitted using series, and transmitting via parallel means.

Orthogonality must exist between the sub carriers, otherwise inter-carrier interference would exist causing data corruption.

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