Timing Estimation based on Higher-Order Cyclostationarity for Faster-than-Nyquist Signals
| Autor: | Meryem Benammar, Damien Roque, Manuel Jose Lopez Morales |
|---|---|
| Přispěvatelé: | Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Universidad Carlos III de Madrid - UC3M (SPAIN) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Faster-than-Nyquist
Computer science Bandwidth (signal processing) Estimator Optique / photonique Timing synchronization 020206 networking & telecommunications 02 engineering and technology Spectral efficiency Computer Science Applications Higher-order cyclostationarity Intersymbol interference Signal-to-noise ratio Non-data-aided Modeling and Simulation 0202 electrical engineering electronic engineering information engineering Nyquist–Shannon sampling theorem Electrical and Electronic Engineering Cumulant Algorithm |
| Popis: | Faster-than-Nyquist (FTN) transmission is a promising technique to increase the spectral efficiency at a fixed constellation size. However, traditional timing synchronization algorithms mostly rely on the eye diagram opening after matched-filtering (e.g., Gardner and zero-crossing). Such approaches are, thus, unsuitable in the presence of the FTN-induced intersymbol interference. In this letter, we first show that FTN signals exhibit cyclostationarity at the $l$ th order ( $l > 2$ ) according to their bandwidth and symbol period. Then, we derive non-data-aided timing offset estimators from the cyclic temporal cumulant function. Besides its relevance for strong FTN scenarios, the proposed solution is also robust to frequency and phase offsets. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|