Ofdm example problems

1. What problem does OFDM solve?
2. What is the main disadvantage of OFDM?
3. Does WIFI use OFDM?
4. Is Bluetooth a OFDM?

What problem does OFDM solve?

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 the main disadvantage of OFDM?

The main drawbacks of OFDM are its high peak to average power ratio and its sensitivity to phase noise and frequency offset.

Does WIFI use OFDM?

802.11a/g/n/ac radios currently use Orthogonal Frequency Division Multiplexing (OFDM) for single-user transmissions on an 802.11 frequency. 802.11ax radios can utilize Orthogonal frequency-division multiple access (OFDMA) which is a multi-user version of the OFDM digital-modulation technology.

Is Bluetooth a OFDM?

BT uses frequency hopping to hop over the entire 2.4 GHz band, while 802.11g, on the other hand, uses OFDM and occupies approximately one third of the 2.4 GHz band. As a result, BT hops on to 802.11g transmissions. The impact of mutual interference depends on the utilization and proximity of both devices.