Howtosignalprocessing
- What is inter carrier interference in OFDM?
- Why is OFDM less vulnerable to inter symbol interference ISI than conventional techniques?
- What is OFDM in wireless communication?
What is inter carrier interference in OFDM?
Intercarrier Interference (ICI) is an impairment well known to degrade performance of Orthogonal Frequency Division Multiplexing (OFDM) transmissions. It arises from carrier frequency offsets (CFO), from the Doppler spread due to channel time-variation, and, to a lesser extent, from sampling frequency offsets (SFO).
Why is OFDM less vulnerable to inter symbol interference ISI than conventional techniques?
In OFDM, several bits can be sent in parallel, or at the same time, in separate substream channels. This enables each substream's data rate to be lower than would be required by a single stream of similar bandwidth. This makes the system less susceptible to interference and enables more efficient data bandwidth.
What is OFDM in wireless communication?
In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a type of digital transmission and a method of encoding digital data on multiple carrier frequencies.
