Closed-Form Estimators of Carrier Frequency Offsets and Channels in the Uplink of Multiuser OFDM Systems. - Lars Häring; Stefan Bieder; Andreas Czylwik (ICASSP (4), 2006)

Residual Carrier and Sampling Frequency Synchronization in Multiuser OFDM Systems. - Lars Häring; Stefan Bieder; Andreas Czylwik (VTC Spring, 2006)

Fine frequency synchronization in the uplink of multiuser OFDM systems. - Lars Häring; Stefan Bieder; Andreas Czylwik (IEEE Trans. Commun., 2009)

Estimation algorithms of multiple channels and carrier frequency offsets in application to multiuser OFDM systems. - Lars Häring; Stefan Bieder; Andreas Czylwik; Thomas Kaiser 001 (IEEE Trans. Wirel. Commun., 2010)