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Filtraggio robusto in tempo invariante per l’ottimizzazione dei relè wireless

Filtraggio robusto in tempo invariante per l’ottimizzazione dei relè wireless

Arjun Nichal

66,85 €
IVA incluido
Disponible
Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Redes y comunicaciones informáticas
ISBN:
9786209527906
66,85 €
IVA incluido
Disponible

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Questo libro presenta la progettazione, l’implementazione e la valutazione delle prestazioni di un filtro SCAMP adattativo congiunto e di uno schema di ottimizzazione del peso del relè per una rete di relè cooperativa wireless Amplify-and-Forward (AF) che opera su canali fading a selezione di frequenza. I sistemi AF convenzionali soffrono di rumore composto e di interferenze intersimbolo (ISI) dovute agli effetti del canale multi-tap a cascata. Per ovviare a queste limitazioni, questo lavoro impiega un approccio di filtraggio adattativo congiunto che ottimizza simultaneamente il filtro di precodifica della sorgente e il peso di amplificazione del relè per minimizzare l’errore quadratico medio (MSE) end-to-end e migliorare la velocità di trasmissione dei dati raggiungibile. Il problema di ottimizzazione congiunta è risolto utilizzando il metodo del subgradiente proiettato (PSGM), che fornisce robustezza contro i vincoli non lineari come la sparsità, mantenendo al contempo una bassa complessità computazionale. L’algoritmo è implementato e testato in un ambiente di simulazione MATLAB con un modello di fading autoregressivo (AR(1)) variabile nel tempo. Vengono analizzate le principali metriche di prestazione, come la convergenza MSE, le caratteristiche del filtro, la velocità raggiungibile e la robustezza alle variazioni dei parametri.

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