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

Massimiliano Pompili; Sergio Barbarossa; Georgios B Giannakis

doi:10.1109/ICASSP.2001.940469

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

Massimiliano Pompili, Sergio Barbarossa, Georgios B Giannakis

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	2341-2344
Number of pages	4
Journal	ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume	4
DOIs	https://doi.org/10.1109/ICASSP.2001.940469
State	Published - Jan 1 2001

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abstract = "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.",

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