US 8,238,506 B2 · Phase-discriminating device and method

Abstract

A high-accuracy and computational efficient phase-discriminating device is provided and includes a phase-discriminating unit. The phase-discriminating unit converts an input and a reference signals into an input and a reference sequences respectively by a one-bit A/D conversion operation, determines a first value, an in-phase component and a quadrature component of the input signal in response to the input and the reference sequences, and produces an estimated phase of the input signal according to a relation among the first value, the in-phase component and a polarity of the quadrature component, wherein the first value is a certain integer being one of a first integer and a second integer, the first integer is a sampling count of the one-bit A/D conversion operation for producing the input sequence, and the second integer is a summation of an absolute value of the in-phase component and that of the quadrature component.

Claims20

Dependent claims

A phase-discriminating device, comprising:

a phase-discriminating unit converting an input and a reference signals into an input and a reference sequences respectively by a one-bit A/D conversion operation, determining a first value AP, an in-phase component IP and a quadrature component QP of the input signal in response to the input and the reference sequences, and producing an estimated phase of the input signal according to a relation among the first value AP, the in-phase component IP and a polarity of the quadrature component QP, wherein the relation is defined by a first formula (sgn[QP]·(1−IP/AP)), the sgn[QP] denotes a polarity function, the estimated phase is proportional to the first formula (sgn[QP]·(1−IP/AP)) and the first value AP is a certain integer being one of:
a first integer being a sample size of the one-bit A/D conversion operation for producing the input sequence;
and
a second integer being a summation of an absolute value of the in-phase component IP and an absolute value of the quadrature component QP.

1 more element

A phase-discriminating device, comprising:

a phase-discriminating unit processing an input signal by a one-bit A/D conversion operation to determine a first value AP, an in-phase component IP and a quadrature component QP of the input signal, and producing an estimated phase of the input signal according to a relation among the first value AP, the in-phase component IP and a polarity of the quadrature component QP, wherein the relation is defined by a first formula (sgn[QP]·(1−IP/AP)), the sgn[QP] denotes a polarity function, the first value AP is associated with a signal-to-noise ratio of the input signal, and the estimated phase is proportional to the first formula (sgn[QP]·(1−IP/AP)).

A phase-discriminating method, comprising steps of:

(a) processing an input signal by a one-bit A/D conversion operation to determine a first value AP, an in-phase component IP and a quadrature component QP of the input signal;
and
(b) producing an estimated phase of the input signal according to a relation among the first value AP, the in-phase component IP and a polarity of the quadrature component QP, wherein the relation is defined by a first formula (sgn[QP]·(1−IP/AP)), the sgn[QP] denotes a polarity function, the first value AP is associated with a signal-to-noise ratio of the input signal, and the estimated phase is proportional to the first formula (sgn[QP]·(1−IP/AP)).

Dependencies are inferred from the claim text.

Phase-discriminating device and method

Life of this patent

Phase-discriminating device and method

Life of this patent

Abstract

Claims20