Quiz 2: OFDM: Principles and Implementation

OFDM Basics

1. What is the purpose of the Guard Band?

A. To increase signal speed.
B. To prevent interference between channels.
C. To decrease signal speed.
D. To decrease costs of implementation.

2. Why should we choose OFDM?

A. It has a higher data transfer rate.
B. It is easy to synchronize.
C. It makes sharing resources difficult.
D. It has a low overall spectral frequency.

3. What is one major advantage of OFDM over FDM?

A. OFDM allows for better utilization of bandwidth.
B. OFDM has lower data transmission rates than FDM.
C. OFDM integrates poorly with MIMO systems.
D. OFDM requires a guard band between channels.

4. What characteristic makes OFDM signals orthogonal to each other?

A. They have the same peak amplitude.
B. They are all transmitted at the same frequency.
C. At the peak of one signal, all other signals are either 0 or null.
D. They are transmitted using different modulation techniques.

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