MUSIC-Based Algorithms for Efficient Carrier Frequency Offset Estimation in Asynchronous, Co-channel OFDM Systems

An improved method for resolving interference between co-channel users is disclosed. A peak in a spectrum generated by a MUSIC algorithm is determined for a signal of interest (SOI) using a noise subspace. Also, an estimated carrier frequency offset (CFO) is determined for the SOI based on the determined peak in the spectrum.