Title: Architectures arithm�tiques approximatives CMOS � faible encombrement (French Edition)
Publisher: Editions Notre Savoir
Publication Date: 2024
Language: French
ISBN 10: 620830086X
ISBN 13: 9786208300869
Binding: Soft cover
Condition: New

About this title

Synopsis

Le calcul approximatif offre une solution alternative pour r�duire la consommation d'�nergie des dispositifs d'application DSP actuels � haute performance. Les techniques conventionnelles de multiplication et d'addition consomment beaucoup d'�nergie. Dans ce m�moire, la conception d'unit�s arithm�tiques approximatives pour les applications de traitement des signaux est explor�e. Tout d'abord, un additionneur approximatif est propos� en modifiant la logique de la cellule de base de l'additionneur complet. La cellule d'addition propos�e compte moins de transistors que les approches similaires r�centes. Ensuite, un multiplicateur approximatif � faible erreur est con�u en utilisant la d�tection du premier bit et en s�lectionnant n/2 bits pour une entr�e de n bits. Le multiplicateur approximatif � n/2 bits propos� donne de bons r�sultats en termes d'erreur et de puissance par rapport � une approche similaire r�cente. Les unit�s approximatives sont ensuite mises en oeuvre dans une unit� MAC (Multiply-Accumulate). L'unit� MAC approximative propos�e offre une am�lioration significative en termes de puissance, de surface et de d�lai au prix d'une faible d�gradation de la pr�cision. Enfin, l'unit� MAC propos�e est mise en oeuvre dans une application de filtrage afin de v�rifier sa fonctionnalit�.

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