Channel-independent non-data aided synchronization of generalized multiuser OFDM

Massimiliano Pompili, Sergio Barbarossa, Georgios B. Giannakis

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We develop and analyze timing and carrier frequency offset synchronization algorithms for generalized asynchronous and quasi-synchronous orthogonal frequency division multiple access systems using null subcarriers and subcarrier hopping. We derive an approximate analytic expression for the variance of the frequency offset estimators as a function of the number of active users and the SNR and show that the performance of our algorithms is asymptotically independent of the channel zero locations for quasi- synchronous systems. Finally, we validate our theoretical expressions with simulations.

Original languageEnglish (US)
Pages (from-to)2341-2344
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
StatePublished - 2001


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