Multiplexing - FDM

What is the primary characteristic of Frequency Division Multiplexing (FDM)?

• It divides a channel into overlapping sub-channels.

• It allows only one user to transmit at a time.

• It divides a channel into many non-overlapping sub-channels.

• It uses time slots to separate signals.

How do Orthogonal Frequency Division Multiplexing (OFDM) sub-channels differ from Frequency Division Multiplexing (FDM) sub-channels?

• OFDM sub-channels are wider and non-overlapping.

• OFDM sub-channels are closely spaced and overlapped.

• FDM sub-channels are orthogonal, while OFDM sub-channels are not.

• FDM sub-channels do not require guard bands, but OFDM sub-channels do.

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In Orthogonal Frequency Division Multiplexing (OFDM), what does it mean for signals to be "orthogonal" to each other?

• They are transmitted at the same frequency.

• The peak of one signal occurs at the null of other neighbor signals.

• They interfere with each other to increase data rate.

• They are completely separated by guard bands.

What is a primary advantage of Orthogonal Frequency Division Multiplexing (OFDM) compared to Frequency Division Multiplexing (FDM)?

• OFDM requires more bandwidth for the same data rate.

• OFDM allows for fewer data transmissions.

• OFDM better utilizes available bandwidth, thus offering higher data transmission rates.

• OFDM is only used in older telecommunication standards.