Chapter 7 / 7.11 / 7.11.9

7.11.9 What Is Orthogonal Frequency-Division Multiplexing (OFDM)?

Discover how OFDM divides high-speed data into many low-speed orthogonal subcarriers. Learn why this approach is highly resistant to multipath propagation and why OFDM forms the basis of Wi-Fi, LTE, 5G, digital television, and many broadband communication systems.

1. What Is Orthogonal Frequency-Division Multiplexing?
2. Why Is It Called Orthogonal Frequency-Division Multiplexing?
3. What Does Orthogonal Mean?
4. How Does OFDM Work?
5. Why Use Many Slow Subcarriers Instead of One Fast Carrier?
6. What Is Multipath Propagation?
7. What Is Inter-Symbol Interference?
8. What Is the Cyclic Prefix?
9. Why Can OFDM Subcarriers Overlap?
10. How Is OFDM Generated?
11. What Modulation Is Used on Each Subcarrier?
12. What Is Adaptive Modulation?
13. Where Is OFDM Used?
14. What Are the Advantages of OFDM?
15. Does OFDM Have Any Disadvantages?
16. Is OFDM Used Together with Other Technologies?
17. Why Is OFDM Important?

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