Communication Apparatus and Method
AssigneeHuawei Technologies Co., Ltd.
InventorsPieter Nuyts, Patrick Vandenameele, Koen Cornelissens
Life of this patent
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Abstract
A communication apparatus including a first mixer configured to generate an analog output signal (XOUT) from an analog input signal (XIN) using a first mixing signal, a second mixer configured to generate an analog output signal (YOUT) from an analog input signal (YIN) using a second mixing signal, and a local oscillator configured to provide a reference frequency (fREF), where the first mixer is configured to derive a first sampling frequency (fS,1) from the fREF, and where the second mixer is configured to derive a second sampling frequency (fS,2) from the fREF.
Claims20
A communication apparatus, comprising:
- a first mixer configured to generate an analog output signal (XOUT) from an analog input signal (XIN) using a first mixing signal, wherein the first mixer comprises a scaler configured to:
- sample the XIN at a plurality of discrete points in time k with a first sampling frequency (fS,1) to obtain a sampled analog input signal (XIN[k]) having a continuous signal value;
- and
- generate the XOUT having a continuous signal value by scaling the XIN[k] on a basis of a plurality of scaling coefficients (A[k]), wherein the A[k] are a time-discrete representation of the first mixing signal;
- a second mixer coupled to the first mixer and configured to generate another analog output signal (YOUT) from another analog input signal (YIN) using a second mixing signal, wherein the second mixer comprises a scaler configured to:
- sample the YIN at a plurality of discrete points in time k with a second sampling frequency (fS,2) to obtain another sampled analog input signal (YIN[k]) having a continuous signal value;
- and
- generate the YOUT having a continuous signal value by scaling the YIN[k] on a basis of a plurality of scaling coefficients (B[k]), wherein the B[k] are a time-discrete representation of the second mixing signal;
- and
- a local oscillator coupled to the first mixer and the second mixer and configured to provide a reference frequency (fREF),
- wherein the first mixer is further configured to derive the fS,1 from the fREF, and
- wherein the second mixer is further configured to derive the fS,2 from the fREF.
A method for generating an analog output signal (XOUT) from an analog input signal (XIN) using a first mixing signal and an analog output signal (YOUT) from an analog input signal (YIN) using a second mixing signal, wherein the method comprises:
- providing a reference frequency (fREF);
- sampling the XIN at a plurality of discrete points in time k with a first sampling frequency (fS,1) to obtain a sampled analog input signal (XIN[k]) having a continuous signal value;
- generating the XOUT having a continuous signal value by scaling the XIN[k] on a basis of a plurality of scaling coefficients (A[k]), wherein the A[k] are a time-discrete representation of the first mixing signal, and wherein the fS,1 is derived from the fREF;
- sampling the YIN at a plurality of discrete points in time k with a second sampling frequency (fS,2) to obtain a sampled analog input signal (YIN[k]) having a continuous signal value;
- and
- generating the YOUT having a continuous signal value by scaling the YIN[k] on a basis of a plurality of scaling coefficients (B[k]), wherein the B[k] are a time-discrete representation of the second mixing signal, and wherein the fS,2 is derived from the fREF.
Dependencies are inferred from the claim text.