Carrier frequency offset

1. What is carrier frequency offset in OFDM?
2. What causes carrier frequency offset?
3. What is meant by frequency offset?
4. What is CFO in 5G?

What is carrier frequency offset in OFDM?

Carrier frequency offset (CFO) is one of most well-known disturbances for OFDM. It generates inter-carrier interference (ICI) and degrades OFDM performance [1]. In order to mitigate the negative influence, CFO is usually estimated and compensated accordingly during OFDM reception.

What causes carrier frequency offset?

Carrier frequency offset often occurs when the local oscillator signal for down-conversion in the receiver does not synchronize with the carrier signal contained in the received signal.

What is meant by frequency offset?

In radio engineering, a frequency offset is an intentional slight shift of broadcast radio frequency (RF), to reduce interference with other transmitters.

What is CFO in 5G?

Carrier Frequency Offset Estimation Based on Tracking Reference Signal in 5G. Abstract: In OFDM-based wireless communication systems, carrier frequency offset (CFO) has been one of the important factors that impair the communication performance.