OFDM: Orthogonal Frequency Division Multiplexing

This lecture introduces Orthogonal Frequency Division Multiplexing (OFDM), a technique widely used in high throughput mobile networks like Wi-Fi and 4G. The instructor explains how OFDM simplifies signal decoding and reduces interference, highlighting its importance in modern communication systems. The lecture covers the concept of cyclic prefix to deal with synchronization and inter-symbol interference, as well as packet detection methods to accurately identify the start of data transmission. The instructor also discusses the trade-offs involved in choosing the size of the cyclic prefix and the impact on data throughput.