Système international d'unité (SI):Ratio de redondance des données=Données redondantes
| Données redondantes | Données utiles | Ratio de redondance | Pourcentage de redondance | Compression de données | Correction d'erreur | Redondance du bit de parité | Bloquer la redondance | Redondance du code de Hamming | Redondance de la somme de contrôle | Vérification de la redondance cyclique | Code de répétition | Redondance du code turbo | Redondance du code LDPC | Code Reed-Solomon | Redondance du code convolutionnel | Redondance de la capacité de Shannon | Redondance de codage source | Étirement des données | Repliement des données | Codage différentiel | Redondance au-dessus du réseau | Redondance du signal | Protocole aérien redondance | Redondance de la fidélité des données | Redondance du canal | Redondance de protection des erreurs | Facteur de fiabilité | Redondance de la division du temps | Redondance de la division spatiale | Redondance de la division de fréquence | Correction d'erreur vers l'avant | Correction d'erreur arrière | Demande de répétition automatique | Redondance de la capacité du canal | Redondance de puissance du signal | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Données redondantes | 1 | 1 | 1 | 1 | 0.5 | 1.2 | 2 | 1.8 | 1.5 | 1.1 | 1.3 | 1.9 | 1.6 | 2 | 1.4 | 1.7 | 1.5 | 0.9 | 1.8 | 1.2 | 1.1 | 1.2 | 2 | 1.3 | 1.5 | 1.4 | 2.2 | 1.6 | 1.7 | 1.8 | 2 | 1.3 | 1.4 | 1.5 | 1.6 | 2 |
| Données utiles | 1 | 1 | 1 | 1 | 0.5 | 1.2 | 2 | 1.8 | 1.5 | 1.1 | 1.3 | 1.9 | 1.6 | 2 | 1.4 | 1.7 | 1.5 | 0.9 | 1.8 | 1.2 | 1.1 | 1.2 | 2 | 1.3 | 1.5 | 1.4 | 2.2 | 1.6 | 1.7 | 1.8 | 2 | 1.3 | 1.4 | 1.5 | 1.6 | 2 |
| Ratio de redondance | 1 | 1 | 1 | 1 | 0.5 | 1.2 | 2 | 1.8 | 1.5 | 1.1 | 1.3 | 1.9 | 1.6 | 2 | 1.4 | 1.7 | 1.5 | 0.9 | 1.8 | 1.2 | 1.1 | 1.2 | 2 | 1.3 | 1.5 | 1.4 | 2.2 | 1.6 | 1.7 | 1.8 | 2 | 1.3 | 1.4 | 1.5 | 1.6 | 2 |
| Pourcentage de redondance | 1 | 1 | 1 | 1 | 0.5 | 1.2 | 2 | 1.8 | 1.5 | 1.1 | 1.3 | 1.9 | 1.6 | 2 | 1.4 | 1.7 | 1.5 | 0.9 | 1.8 | 1.2 | 1.1 | 1.2 | 2 | 1.3 | 1.5 | 1.4 | 2.2 | 1.6 | 1.7 | 1.8 | 2 | 1.3 | 1.4 | 1.5 | 1.6 | 2 |
| Compression de données | 2 | 2 | 2 | 2 | 1 | 2.4 | 4 | 3.6 | 3 | 2.2 | 2.6 | 3.8 | 3.2 | 4 | 2.8 | 3.4 | 3 | 1.8 | 3.6 | 2.4 | 2.2 | 2.4 | 4 | 2.6 | 3 | 2.8 | 4.4 | 3.2 | 3.4 | 3.6 | 4 | 2.6 | 2.8 | 3 | 3.2 | 4 |
| Correction d'erreur | 0.833 | 0.833 | 0.833 | 0.833 | 0.417 | 1 | 1.667 | 1.5 | 1.25 | 0.917 | 1.083 | 1.583 | 1.333 | 1.667 | 1.167 | 1.417 | 1.25 | 0.75 | 1.5 | 1 | 0.917 | 1 | 1.667 | 1.083 | 1.25 | 1.167 | 1.833 | 1.333 | 1.417 | 1.5 | 1.667 | 1.083 | 1.167 | 1.25 | 1.333 | 1.667 |
| Redondance du bit de parité | 0.5 | 0.5 | 0.5 | 0.5 | 0.25 | 0.6 | 1 | 0.9 | 0.75 | 0.55 | 0.65 | 0.95 | 0.8 | 1 | 0.7 | 0.85 | 0.75 | 0.45 | 0.9 | 0.6 | 0.55 | 0.6 | 1 | 0.65 | 0.75 | 0.7 | 1.1 | 0.8 | 0.85 | 0.9 | 1 | 0.65 | 0.7 | 0.75 | 0.8 | 1 |
| Bloquer la redondance | 0.556 | 0.556 | 0.556 | 0.556 | 0.278 | 0.667 | 1.111 | 1 | 0.833 | 0.611 | 0.722 | 1.056 | 0.889 | 1.111 | 0.778 | 0.944 | 0.833 | 0.5 | 1 | 0.667 | 0.611 | 0.667 | 1.111 | 0.722 | 0.833 | 0.778 | 1.222 | 0.889 | 0.944 | 1 | 1.111 | 0.722 | 0.778 | 0.833 | 0.889 | 1.111 |
| Redondance du code de Hamming | 0.667 | 0.667 | 0.667 | 0.667 | 0.333 | 0.8 | 1.333 | 1.2 | 1 | 0.733 | 0.867 | 1.267 | 1.067 | 1.333 | 0.933 | 1.133 | 1 | 0.6 | 1.2 | 0.8 | 0.733 | 0.8 | 1.333 | 0.867 | 1 | 0.933 | 1.467 | 1.067 | 1.133 | 1.2 | 1.333 | 0.867 | 0.933 | 1 | 1.067 | 1.333 |
| Redondance de la somme de contrôle | 0.909 | 0.909 | 0.909 | 0.909 | 0.455 | 1.091 | 1.818 | 1.636 | 1.364 | 1 | 1.182 | 1.727 | 1.455 | 1.818 | 1.273 | 1.545 | 1.364 | 0.818 | 1.636 | 1.091 | 1 | 1.091 | 1.818 | 1.182 | 1.364 | 1.273 | 2 | 1.455 | 1.545 | 1.636 | 1.818 | 1.182 | 1.273 | 1.364 | 1.455 | 1.818 |
| Vérification de la redondance cyclique | 0.769 | 0.769 | 0.769 | 0.769 | 0.385 | 0.923 | 1.538 | 1.385 | 1.154 | 0.846 | 1 | 1.462 | 1.231 | 1.538 | 1.077 | 1.308 | 1.154 | 0.692 | 1.385 | 0.923 | 0.846 | 0.923 | 1.538 | 1 | 1.154 | 1.077 | 1.692 | 1.231 | 1.308 | 1.385 | 1.538 | 1 | 1.077 | 1.154 | 1.231 | 1.538 |
| Code de répétition | 0.526 | 0.526 | 0.526 | 0.526 | 0.263 | 0.632 | 1.053 | 0.947 | 0.789 | 0.579 | 0.684 | 1 | 0.842 | 1.053 | 0.737 | 0.895 | 0.789 | 0.474 | 0.947 | 0.632 | 0.579 | 0.632 | 1.053 | 0.684 | 0.789 | 0.737 | 1.158 | 0.842 | 0.895 | 0.947 | 1.053 | 0.684 | 0.737 | 0.789 | 0.842 | 1.053 |
| Redondance du code turbo | 0.625 | 0.625 | 0.625 | 0.625 | 0.313 | 0.75 | 1.25 | 1.125 | 0.938 | 0.688 | 0.813 | 1.187 | 1 | 1.25 | 0.875 | 1.063 | 0.938 | 0.563 | 1.125 | 0.75 | 0.688 | 0.75 | 1.25 | 0.813 | 0.938 | 0.875 | 1.375 | 1 | 1.063 | 1.125 | 1.25 | 0.813 | 0.875 | 0.938 | 1 | 1.25 |
| Redondance du code LDPC | 0.5 | 0.5 | 0.5 | 0.5 | 0.25 | 0.6 | 1 | 0.9 | 0.75 | 0.55 | 0.65 | 0.95 | 0.8 | 1 | 0.7 | 0.85 | 0.75 | 0.45 | 0.9 | 0.6 | 0.55 | 0.6 | 1 | 0.65 | 0.75 | 0.7 | 1.1 | 0.8 | 0.85 | 0.9 | 1 | 0.65 | 0.7 | 0.75 | 0.8 | 1 |
| Code Reed-Solomon | 0.714 | 0.714 | 0.714 | 0.714 | 0.357 | 0.857 | 1.429 | 1.286 | 1.071 | 0.786 | 0.929 | 1.357 | 1.143 | 1.429 | 1 | 1.214 | 1.071 | 0.643 | 1.286 | 0.857 | 0.786 | 0.857 | 1.429 | 0.929 | 1.071 | 1 | 1.571 | 1.143 | 1.214 | 1.286 | 1.429 | 0.929 | 1 | 1.071 | 1.143 | 1.429 |
| Redondance du code convolutionnel | 0.588 | 0.588 | 0.588 | 0.588 | 0.294 | 0.706 | 1.176 | 1.059 | 0.882 | 0.647 | 0.765 | 1.118 | 0.941 | 1.176 | 0.824 | 1 | 0.882 | 0.529 | 1.059 | 0.706 | 0.647 | 0.706 | 1.176 | 0.765 | 0.882 | 0.824 | 1.294 | 0.941 | 1 | 1.059 | 1.176 | 0.765 | 0.824 | 0.882 | 0.941 | 1.176 |
| Redondance de la capacité de Shannon | 0.667 | 0.667 | 0.667 | 0.667 | 0.333 | 0.8 | 1.333 | 1.2 | 1 | 0.733 | 0.867 | 1.267 | 1.067 | 1.333 | 0.933 | 1.133 | 1 | 0.6 | 1.2 | 0.8 | 0.733 | 0.8 | 1.333 | 0.867 | 1 | 0.933 | 1.467 | 1.067 | 1.133 | 1.2 | 1.333 | 0.867 | 0.933 | 1 | 1.067 | 1.333 |
| Redondance de codage source | 1.111 | 1.111 | 1.111 | 1.111 | 0.556 | 1.333 | 2.222 | 2 | 1.667 | 1.222 | 1.444 | 2.111 | 1.778 | 2.222 | 1.556 | 1.889 | 1.667 | 1 | 2 | 1.333 | 1.222 | 1.333 | 2.222 | 1.444 | 1.667 | 1.556 | 2.444 | 1.778 | 1.889 | 2 | 2.222 | 1.444 | 1.556 | 1.667 | 1.778 | 2.222 |
| Étirement des données | 0.556 | 0.556 | 0.556 | 0.556 | 0.278 | 0.667 | 1.111 | 1 | 0.833 | 0.611 | 0.722 | 1.056 | 0.889 | 1.111 | 0.778 | 0.944 | 0.833 | 0.5 | 1 | 0.667 | 0.611 | 0.667 | 1.111 | 0.722 | 0.833 | 0.778 | 1.222 | 0.889 | 0.944 | 1 | 1.111 | 0.722 | 0.778 | 0.833 | 0.889 | 1.111 |
| Repliement des données | 0.833 | 0.833 | 0.833 | 0.833 | 0.417 | 1 | 1.667 | 1.5 | 1.25 | 0.917 | 1.083 | 1.583 | 1.333 | 1.667 | 1.167 | 1.417 | 1.25 | 0.75 | 1.5 | 1 | 0.917 | 1 | 1.667 | 1.083 | 1.25 | 1.167 | 1.833 | 1.333 | 1.417 | 1.5 | 1.667 | 1.083 | 1.167 | 1.25 | 1.333 | 1.667 |
| Codage différentiel | 0.909 | 0.909 | 0.909 | 0.909 | 0.455 | 1.091 | 1.818 | 1.636 | 1.364 | 1 | 1.182 | 1.727 | 1.455 | 1.818 | 1.273 | 1.545 | 1.364 | 0.818 | 1.636 | 1.091 | 1 | 1.091 | 1.818 | 1.182 | 1.364 | 1.273 | 2 | 1.455 | 1.545 | 1.636 | 1.818 | 1.182 | 1.273 | 1.364 | 1.455 | 1.818 |
| Redondance au-dessus du réseau | 0.833 | 0.833 | 0.833 | 0.833 | 0.417 | 1 | 1.667 | 1.5 | 1.25 | 0.917 | 1.083 | 1.583 | 1.333 | 1.667 | 1.167 | 1.417 | 1.25 | 0.75 | 1.5 | 1 | 0.917 | 1 | 1.667 | 1.083 | 1.25 | 1.167 | 1.833 | 1.333 | 1.417 | 1.5 | 1.667 | 1.083 | 1.167 | 1.25 | 1.333 | 1.667 |
| Redondance du signal | 0.5 | 0.5 | 0.5 | 0.5 | 0.25 | 0.6 | 1 | 0.9 | 0.75 | 0.55 | 0.65 | 0.95 | 0.8 | 1 | 0.7 | 0.85 | 0.75 | 0.45 | 0.9 | 0.6 | 0.55 | 0.6 | 1 | 0.65 | 0.75 | 0.7 | 1.1 | 0.8 | 0.85 | 0.9 | 1 | 0.65 | 0.7 | 0.75 | 0.8 | 1 |
| Protocole aérien redondance | 0.769 | 0.769 | 0.769 | 0.769 | 0.385 | 0.923 | 1.538 | 1.385 | 1.154 | 0.846 | 1 | 1.462 | 1.231 | 1.538 | 1.077 | 1.308 | 1.154 | 0.692 | 1.385 | 0.923 | 0.846 | 0.923 | 1.538 | 1 | 1.154 | 1.077 | 1.692 | 1.231 | 1.308 | 1.385 | 1.538 | 1 | 1.077 | 1.154 | 1.231 | 1.538 |
| Redondance de la fidélité des données | 0.667 | 0.667 | 0.667 | 0.667 | 0.333 | 0.8 | 1.333 | 1.2 | 1 | 0.733 | 0.867 | 1.267 | 1.067 | 1.333 | 0.933 | 1.133 | 1 | 0.6 | 1.2 | 0.8 | 0.733 | 0.8 | 1.333 | 0.867 | 1 | 0.933 | 1.467 | 1.067 | 1.133 | 1.2 | 1.333 | 0.867 | 0.933 | 1 | 1.067 | 1.333 |
| Redondance du canal | 0.714 | 0.714 | 0.714 | 0.714 | 0.357 | 0.857 | 1.429 | 1.286 | 1.071 | 0.786 | 0.929 | 1.357 | 1.143 | 1.429 | 1 | 1.214 | 1.071 | 0.643 | 1.286 | 0.857 | 0.786 | 0.857 | 1.429 | 0.929 | 1.071 | 1 | 1.571 | 1.143 | 1.214 | 1.286 | 1.429 | 0.929 | 1 | 1.071 | 1.143 | 1.429 |
| Redondance de protection des erreurs | 0.455 | 0.455 | 0.455 | 0.455 | 0.227 | 0.545 | 0.909 | 0.818 | 0.682 | 0.5 | 0.591 | 0.864 | 0.727 | 0.909 | 0.636 | 0.773 | 0.682 | 0.409 | 0.818 | 0.545 | 0.5 | 0.545 | 0.909 | 0.591 | 0.682 | 0.636 | 1 | 0.727 | 0.773 | 0.818 | 0.909 | 0.591 | 0.636 | 0.682 | 0.727 | 0.909 |
| Facteur de fiabilité | 0.625 | 0.625 | 0.625 | 0.625 | 0.313 | 0.75 | 1.25 | 1.125 | 0.938 | 0.688 | 0.813 | 1.187 | 1 | 1.25 | 0.875 | 1.063 | 0.938 | 0.563 | 1.125 | 0.75 | 0.688 | 0.75 | 1.25 | 0.813 | 0.938 | 0.875 | 1.375 | 1 | 1.063 | 1.125 | 1.25 | 0.813 | 0.875 | 0.938 | 1 | 1.25 |
| Redondance de la division du temps | 0.588 | 0.588 | 0.588 | 0.588 | 0.294 | 0.706 | 1.176 | 1.059 | 0.882 | 0.647 | 0.765 | 1.118 | 0.941 | 1.176 | 0.824 | 1 | 0.882 | 0.529 | 1.059 | 0.706 | 0.647 | 0.706 | 1.176 | 0.765 | 0.882 | 0.824 | 1.294 | 0.941 | 1 | 1.059 | 1.176 | 0.765 | 0.824 | 0.882 | 0.941 | 1.176 |
| Redondance de la division spatiale | 0.556 | 0.556 | 0.556 | 0.556 | 0.278 | 0.667 | 1.111 | 1 | 0.833 | 0.611 | 0.722 | 1.056 | 0.889 | 1.111 | 0.778 | 0.944 | 0.833 | 0.5 | 1 | 0.667 | 0.611 | 0.667 | 1.111 | 0.722 | 0.833 | 0.778 | 1.222 | 0.889 | 0.944 | 1 | 1.111 | 0.722 | 0.778 | 0.833 | 0.889 | 1.111 |
| Redondance de la division de fréquence | 0.5 | 0.5 | 0.5 | 0.5 | 0.25 | 0.6 | 1 | 0.9 | 0.75 | 0.55 | 0.65 | 0.95 | 0.8 | 1 | 0.7 | 0.85 | 0.75 | 0.45 | 0.9 | 0.6 | 0.55 | 0.6 | 1 | 0.65 | 0.75 | 0.7 | 1.1 | 0.8 | 0.85 | 0.9 | 1 | 0.65 | 0.7 | 0.75 | 0.8 | 1 |
| Correction d'erreur vers l'avant | 0.769 | 0.769 | 0.769 | 0.769 | 0.385 | 0.923 | 1.538 | 1.385 | 1.154 | 0.846 | 1 | 1.462 | 1.231 | 1.538 | 1.077 | 1.308 | 1.154 | 0.692 | 1.385 | 0.923 | 0.846 | 0.923 | 1.538 | 1 | 1.154 | 1.077 | 1.692 | 1.231 | 1.308 | 1.385 | 1.538 | 1 | 1.077 | 1.154 | 1.231 | 1.538 |
| Correction d'erreur arrière | 0.714 | 0.714 | 0.714 | 0.714 | 0.357 | 0.857 | 1.429 | 1.286 | 1.071 | 0.786 | 0.929 | 1.357 | 1.143 | 1.429 | 1 | 1.214 | 1.071 | 0.643 | 1.286 | 0.857 | 0.786 | 0.857 | 1.429 | 0.929 | 1.071 | 1 | 1.571 | 1.143 | 1.214 | 1.286 | 1.429 | 0.929 | 1 | 1.071 | 1.143 | 1.429 |
| Demande de répétition automatique | 0.667 | 0.667 | 0.667 | 0.667 | 0.333 | 0.8 | 1.333 | 1.2 | 1 | 0.733 | 0.867 | 1.267 | 1.067 | 1.333 | 0.933 | 1.133 | 1 | 0.6 | 1.2 | 0.8 | 0.733 | 0.8 | 1.333 | 0.867 | 1 | 0.933 | 1.467 | 1.067 | 1.133 | 1.2 | 1.333 | 0.867 | 0.933 | 1 | 1.067 | 1.333 |
| Redondance de la capacité du canal | 0.625 | 0.625 | 0.625 | 0.625 | 0.313 | 0.75 | 1.25 | 1.125 | 0.938 | 0.688 | 0.813 | 1.187 | 1 | 1.25 | 0.875 | 1.063 | 0.938 | 0.563 | 1.125 | 0.75 | 0.688 | 0.75 | 1.25 | 0.813 | 0.938 | 0.875 | 1.375 | 1 | 1.063 | 1.125 | 1.25 | 0.813 | 0.875 | 0.938 | 1 | 1.25 |
| Redondance de puissance du signal | 0.5 | 0.5 | 0.5 | 0.5 | 0.25 | 0.6 | 1 | 0.9 | 0.75 | 0.55 | 0.65 | 0.95 | 0.8 | 1 | 0.7 | 0.85 | 0.75 | 0.45 | 0.9 | 0.6 | 0.55 | 0.6 | 1 | 0.65 | 0.75 | 0.7 | 1.1 | 0.8 | 0.85 | 0.9 | 1 | 0.65 | 0.7 | 0.75 | 0.8 | 1 |
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