Research Article
A ROM-Less Direct Digital Frequency Synthesizer Based on Hybrid Polynomial Approximation
Table 3
Comparison on different polynomial arrangement.
| | Rule | | Required multiplier | Adders |
| | Standard fourth order | Equation (1) | 7 (4 fixed coefficients, 1 variable
Coefficient, and 2 squarer) | 4 | | Horner rule | Equation (4) | 4 (1 fixed coefficient and 3 variable coefficients) | 4 | | Reference [12] | Equation (5) | 4 (2 fixed coefficients and 2 squarer) | 4 | | Proposed rule | Equation (6) | 3 (1 fixed coefficient, 1 squarer,
and 1 variable coefficient) | 5 |
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