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Parallel Blind Multiuser Synchronization and Sequences Estimation in Multirate CDMA Transmissions

Crépin Nsiala-Nzéza 1 Roland Gautier 2, 3, 1, * Gilles Burel 1, 2, 3
* Corresponding author
2 Lab-STICC_UBO_CACS_COM
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance, UBO - Université de Brest
Abstract : In this paper, the blind synchronization approach based on the Frobenius square norm behaviour (FSNB) proposed in [1]-[3] is extended to the case of several users in multirate CDMA transmissions. It consists in estimating the FSNB criterion maxima (synchronization peaks) positions, and it allows one to estimate desynchronization and transmissions delay times. We prove that, the extented-FSNB criterion is a powerful tool for blind synchronization. We also detail the synchronization peaks masking which degrades its performances especially at very low SNRs, and show how to proceed in this case. Simulation results illustrate sequences identification and symbols recovering, after synchronizing using the extended-FSNB.
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https://hal.univ-brest.fr/hal-00485760
Contributor : Roland Gautier <>
Submitted on : Friday, May 21, 2010 - 4:49:28 PM
Last modification on : Wednesday, June 24, 2020 - 4:19:24 PM

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Crépin Nsiala-Nzéza, Roland Gautier, Gilles Burel. Parallel Blind Multiuser Synchronization and Sequences Estimation in Multirate CDMA Transmissions. 40th IEEE - Asilomar Conference on Signals, Systems and Computers 2006, Oct 2006, Pacific Grove, California, United States. pp.2157-2161, ⟨10.1109/ACSSC.2006.355150⟩. ⟨hal-00485760⟩

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