Complex Phase Shift

Apply complex phase shift to complex signal

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Libraries:
Communications Toolbox / Utility Blocks

Description

The Complex Phase Shift block applies a complex phase shift to a complex signal. This block independently processes each pair of corresponding elements.

Examples

Apply Complex Phase Shift to QPSK Signal

The model applies QPSK modulation, and then applies a phase shift to a signal. Calculate the phase difference and plot the constellation of the signal before and after the phase shift.

The Complex Phase Shift block applies a 30 degree phase shift to a QPSK modulated signal. The Complex Phase Difference block determines the phase difference. A To Workspace (Simulink) block passes the calculated phase difference to the workspace. A Constellation Diagram block plots the signal constellation before and after the phase shift.

The phase difference is calculated from the second input to the first input.

The calculated phase difference is: -30.0000

Ports

Input

In — Input signal

scalar | column vector | matrix

Input signal, specified as a scalar, column vector, or matrix.

Note

This block processes and outputs complex signals. Real values at the input port are type cast to complex values with +j0 complex components.

Data Types: double | single
Complex Number Support: Yes

Ph — Phase shift

scalar | column vector | matrix

Phase shift in radians, specified as a scalar, column vector, or matrix. If the phase shift is nonscalar, it must have the same dimension as the signal at port In.

Data Types: double

Output

Out1 — Phase-shifted signal

scalar | column vector | matrix

Phase-shifted signal, returned as a complex-valued scalar, column vector, or matrix. This output is the same dimension and data type as the input signal.

Block Characteristics

Data Types	double | single
Multidimensional Signals	no
Variable-Size Signals	no

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced before R2006a