Patent ID: 8891687

Claim:
A system for estimating non-energy parameters of a signal carrier, the system comprising: a digital phase locked loop (PLL) that tracks an input signal and includes (i) a digital numerically controlled oscillator (NCO) configured to generate a complex sinusoidal signal, (ii) a digital mixer configured to down-convert a digitized version of the input signal to a base-band complex signal centered at a zero frequency using the output of the NCO, (iii) an accumulator unit (AU) including two accumulators with a reset connected to outputs of the digital mixer, and (iv) a phase discriminator (PD) coupled to outputs of the AU; (v) a digital loop filter (LF) connected to the PD output for controlling the NCO, wherein a time delay of the PD output is variable; an estimator unit (EU) connected to the LF and estimating a phase of the input signal and derivatives of the phase as the non-energy parameters; and a delay meter measuring a delay of the PD output and providing the delay to the LF and EU.