Receiver
Libraries:
Phased Array System Toolbox /
Transmitters and Receivers
Description
Amplify an input signal with non-linear distortions and added noise.
Ports
Input
X — Received signal
complex-valued vector | complex-valued matrix
Received signal voltage, specified as a complex-valued vector or complex-valued matrix. The number of rows is equal to the number of samples.
If X is a vector, the number of rows in Y equals the
number of rows in X
.The number of columns in Y
equals the number of channels in the receiver.
In the case where X is a vector, the number of channels is determined by the active parameters that indicate a channel number, such as Noise figure (dB), Reference temperature (K), Gain (dB) and Phase offset (degrees).
Receiver effects are applied to the signal in a fixed order although some effects can be omitted. The order in which effects are applied to the input signal:
Input noise is when the Add noise to input signal check box is selected.
System noise is added according to the method specified in Noise method parameter.
Signal gain is applied according to the method specified in the Gain method parameter.
Phase offset is added to the signal according to Phase offset (degrees) parameter.
Data Types: single
| double
Complex Number Support: Yes
Output
Y — Amplified signal
complex-valued vector | complex-valued matrix
Amplified received signal voltage, returned as a complex-valued vector or complex-valued matrix. If X is a matrix, the size of y is equal to the size of X. The transformation is based on receiver characteristics, such as the gain, nonlinearity, and noise Power is calculated from signal voltage assuming a reference impedance of 1 Ohm.
Data Types: single
| double
Complex Number Support: Yes
Parameters
To edit block parameters interactively, use the Property Inspector. From the Simulink® Toolstrip, on the Simulation tab, in the Prepare gallery, select Property Inspector.
NoiseAdd noise to input signal — Add noise to input signal
off
(default) | on
Selected this check box to add noise it the input signal prior to applying receiver effects. The Input noise temperature (K) parameter determines the power of the added noise. The Sample rate (Hz) parameter determines the noise bandwidth.
Example:
true
Data Types: Boolean
Input noise temperature (K) — Input noise temperature
290
(default) | positive scalar | length-N vector of positive values
Input noise temperature, specified as a positive scalar or length-N vector of positive values where N is the number of receiver channels. If the Input noise temperature (K) parameter is a scalar, the same value is applied to all channels. Units are in Kelvin degrees.
Example: 300
Dependencies
To enable this parameter, select the Input noise temperature (K) check box.
Data Types: single
| double
Noise method — Noise method
None
| Noise figure
| Noise factor
| Noise temperature
Method for defining the system noise, specified as None
,
Noise figure
, Noise factor
or
Noise temperature
.
When set to
None
, no noise is applied.When set to
Noise figure
, the Noise figure (dB) parameter determines the noise level.When set to
Noise temperature
, the Input noise temperature (K) parameter determines the noise level.When set to
Noise factor
, the Noise factor parameter determines the noise level.
The noise bandwidth is derived from the input signal sample rate.
Example: Noise figure
Data Types: char
| string
Noise figure (dB) — Noise figure
3
(default) | real scalar | length-N vector or real values
Receiver noise figure, specified as a real scalar or length-N vector of real values. N is the number of channels. If Noise figure (dB) is a scalar, the same value is applied to all channels. Noise is generated with respect to the temperature defined by the Reference temperature (K) parameter.
Dependencies
To enable this property, set the Noise method parameter to
Noise figure
.
Data Types: single
| double
Noise factor — Noise factor
2
(default) | positive scalar | length-N vector of positive values
Receiver noise factor, specified as a positive scalar or length-N vector of positive values. N is the number of channels. If the Noise factor parameters is a scalar, the same value is applied to all channels. Noise is generated with respect to the temperature defined by the Reference temperature (K) parameter.
Dependencies
To enable this property, set the Noise method parameter to
Noise factor
.
Data Types: single
| double
Reference temperature (K) — Reference temperature
290
(default) | positive scalar | length-N vector of positive values
Reference temperature, specified as a positive scalar or a length-N vector of positive values. N is the number of channels. If the Reference temperature (K) parameter is a scalar, the same value is applied to all channels.
Dependencies
To enable this property, set the Noise method parameter to
Noise figure
or Noise
factor
.
Data Types: single
| double
Sample rate (Hz) — Sample rate
1e6
(default) | positive scalar
Sample rate of the input signal, specified as a positive scalar. Use this parameter to add noise to the signal. The Sample rate (Hz) parameter is only used to derive the noise bandwidth of the signal.
Dependencies
To enable this property, select the Add noise to input
signal check box or set the Noise method
parameter to Noise figure
, Noise
factor
, or Noise temperature
.
Data Types: single
| double
Inherit sample rate — Inherit sample rate from upstream blocks
on (default) | off
Select this parameter to inherit the sample rate from upstream blocks. Otherwise, specify the sample rate using the Sample rate (Hz) parameter.
Data Types: Boolean
Simulate using — Block simulation method
Interpreted Execution
(default) | Code Generation
Block simulation, specified as Interpreted Execution
or
Code Generation
. If you want your block to use the
MATLAB® interpreter, choose Interpreted Execution
. If
you want your block to run as compiled code, choose Code
Generation
. Compiled code requires time to compile but usually runs
faster.
Interpreted execution is useful when you are developing and tuning a model. The block
runs the underlying System object™ in MATLAB. You can change and execute your model quickly. When you are satisfied
with your results, you can then run the block using Code
Generation
. Long simulations run faster with generated code than in
interpreted execution. You can run repeated executions without recompiling, but if you
change any block parameters, then the block automatically recompiles before
execution.
This table shows how the Simulate using parameter affects the overall simulation behavior.
When the Simulink model is in Accelerator
mode, the block mode specified
using Simulate using overrides the simulation mode.
Acceleration Modes
Block Simulation | Simulation Behavior | ||
Normal | Accelerator | Rapid Accelerator | |
Interpreted Execution | The block executes using the MATLAB interpreter. | The block executes using the MATLAB interpreter. | Creates a standalone executable from the model. |
Code Generation | The block is compiled. | All blocks in the model are compiled. |
For more information, see Choosing a Simulation Mode (Simulink).
Programmatic Use
Block
Parameter:SimulateUsing |
Type:enum |
Values:Interpreted
Execution , Code Generation |
Default:Interpreted
Execution |
Gain method — Gain method
Linear
(default) | Cubic polynomial
| Lookup table
Method for applying gain to the received signal, specified as
Linear
, Cubic polynomial
or
Lookup table
.
When set to
Linear
, linear gain is applied.When set to
Cubic polynomial
, a cubic polynomial model is used to apply non-linear gain.When set to
Lookup table
, a lookup table is defined to directly specify output power and phase shift as a function of input power.
Data Types: char
| string
Gain (dB) — Linear receiver gain
20
(default) | real scalar | length-N vector of real values
Linear receiver gain, specified as a real scalar or length-N vector of real values. N is the number of channels. If the Gain (dB) parameter is a scalar, the same value is applied to all channels. Units are in dB.
Dependencies
To enable this property, set the Gain method parameter to
Linear
or Cubic
polynomial
.
Data Types: single
| double
Output IP3 (dBm) — Output IP3
Inf
(default) | scalar | length-N vector of real values
Output IP3 specified as a scalar or length-N vector of real values. N is the number of channels. OIP3 expresses the non-linearity of the transmitter or receiver. OIP is also called the third-order intercept point. If OIP3 is a scalar, the same value is applied to all channels. See Nonlinearities and Noise in Idealized Baseband Amplifier Block (RF Blockset) for a detailed discussion of OIP3. Units are in dBm.
Dependencies
To enable this property, set the Gain method parameter to
Cubic polynomial
.
Data Types: single
| double
Lookup table — Lookup table
[-25, 5, -1; -10, 20, -2; 0, 27, 5; 5, 28,
12]
(default) | M-by-N real-valued matrix | M-by-N real-valued matrix
Lookup table, specified as a 3-by-M-by-N real-valued array. Specify AM/AM (in dB/dB) and AM/PM (in deg/dB) characteristics in a [Pin(dBm),Pout(dBm),Phase shift(degrees)]-by-M or [Pin(dBm),Pout(dBm),Phase shift(degrees)]-by-M-by-N matrix. M is the number of table entries and N is the number of channels. The matrix elements must be real. The column 1 input power must increase monotonically. There must be at least 3 rows in the table.
Dependencies
To enable this property, set the Gain method parameter to
Lookup table
.
Data Types: single
| double
Phased offset (degrees) — Phase offset
0
(default) | scalar | length-N vector of real values
Phase offset, specified as a real scalar or length-N vector of real values. N is the number of channels. If Phase offset (degrees) is a scalar, the same value is applied to all channels. Units are in degrees.
Data Types: single
| double
Source of seed for random number generator — Source of seed for random number generator
Auto
(default) | Property
Source of seed for random number generator, specified as
Auto
or Property
. When source is
Auto
, the seed if generated automatically. When the source
is Property
, seed is set using the Seed for random
number generator parameter.
Example: Property
Data Types: char
| string
Seed for random number generator — Seed for random number generator
0 (default) | positive integer
Seed for random generator, specified as a positive integer.
Data Types: single
| double
Extended Capabilities
C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.
Version History
Introduced in R2024a
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