A time and frequency synchronization scheme for multiuser OFDM.

We present a multiuser synchronization scheme for tracking the mobile's uplink time and frequency offsets. It uses the redundancy introduced by the cyclic prefix and does not need additional pilots. We show performance results of an orthogonal frequency division multiplexing (OFDM)-based radio...

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Pubblicato in:	IEEE Journal on selected areas in communications 17, 11 (1999).
Autore principale:	Van de Beek, J.-J
Natura:	Articolo
Lingua:	English
Soggetti:	UMTS. Coherent system. Cyclic prefix. Differentially modulated system. Frequency offset estimation. Frequency offset tracking. Frequency synchronization. Hybrid TDMA/FDMA scheme. Mobile channel environment. Mobile uplink. Multiuser OFDM. Orthogonal frequency division multiplexing. Performance results. Radio interface. Symbol error rate. Synchronization errors. System performance. Time offset tracking. Time synchronization. Universal mobile telecommunication system.