sdr.LinearModulation.decide_symbols(a_tilde: ArrayLike) → tuple[NDArray[int_], NDArray[complex_]] Converts the received complex symbols a~[k] into decimal symbol decisions s^[k] and complex symbol decisions a^[k] using maximum-likelihood estimation (MLE). Parameters:¶ a_tilde: ArrayLike¶The received complex symbols a~[k]. Returns:¶ The decimal symbol decisions s^[k], 0 to M−1. The complex symbol decisions a^[k].