Efficient Integer Frequency Offset Estimation Architecture for Enhanced OFDM Synchronization.

In orthogonal frequency-division multiplexing (OFDM) systems, integer frequency offset (IFO) causes a circular shift of the subcarrier indices in the frequency domain. The IFO can be mitigated through strict RF front-end design, which tends to be expensive, or by strictly limiting mobility and channel agility, which constrains operating scenarios. The IFO is, therefore, often estimated and removed...