Creates a new Farrow arbitrary resampler.

Parameters:¶

order: int¶

The order \(p\) of the Lagrange interpolating polynomial.

alpha: float = 0.5¶

A free design parameter \(0 \le \alpha \le 1\) that controls the shape of a 2nd order filter. This ensures that the filter has an even number of taps and is linear phase. The default value is \(\alpha = 0.5\), which is a good compromise between performance and fixed-point computational complexity. It was found through simulation that \(\alpha = 0.43\) is optimal for BPSK using a square root raised cosine filter with 100% excess bandwidth.

streaming: bool = False¶

Indicates whether to use streaming mode. In streaming mode, previous inputs are preserved between calls to __call__().

Examples¶

See the Farrow arbitrary resampler example.