Carrier frequency offset (CFO) is one of many non-ideal conditions that may affect in baseband receiver design. In designing a baseband receiver, we should notice not only the degradation invoked by non-ideal channel See more

In MIMO-OFDM systems, the transmit antennas are often co-located, so are the receive antennas.
Hence, it is valid to assume that only one oscillator is referenced in either the transmitter side or the receiver side. As a result, a single … See more

In order to suppress the ICI and thereby reduce SNR degradation, the residual CFO must be sufficiently small. For example, when … See more

If the TX oscillator runs at a frequency that is 20 ppm above the nominal frequency and if the RX oscillator is running at 20 ppm below, then the received baseband signal will have a … See more

Fractional CFO estimation
Maximum likelihood (ML) estimation
An estimate of the CFO, if within a certain limit, can be … See more

Although the CFO in the received signal has been estimated and compensated in the receiver, some residual CFO may still exist. Besides, the … See more

1. G. L. Stuber et ai., 2004. "Broadband MIMO-OFDM wireless communications," Proceedings of the IEEE, 92,271-293.
2. A. … See more