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Table 1 Amplitude approximation over three angular intervals: amplitude approximation coefficients and resulting relative amplitude errors for floating-point and fixed-point implementations.

From: Efficient Lookup Table-Based Adaptive Baseband Predistortion Architecture for Memoryless Nonlinearity

Quantities

Floating-point

Fixed-point

(%)

(%)

(%)

  1. , , and .
  2. is the relative amplitude error for the th input.
  3. is the total number of test samples.