| Publisher | University of Waterloo | ||
|---|---|---|---|
| Format | 79.5KB PDF | Date added | 16 Mar 2009 |
| Topics | Modems | ||
| Downloads | 258 | ||
Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier transmission technique, which is widely adopted in different communication applications. OFDM prevents Inter Symbol Interference (ISI) by inserting a guard interval and mitigates the frequency selectivity of a multi-path channel by using a simple equalizer. This simplifies the design of the receiver and leads to inexpensive hardware implementations. In systems with a high-speed transmission of data, large delay spreads can seriously limit the system performance due to ISI. Moreover, OFDM offers some advantages in higher order modulations and in the networking operation that position OFDM as the technique of choice for the next generation of wireless networks.
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