please help me to understand "AWGN Channel" and "HDL Implementation of AWGN Generator" blocks ?

where AWGN Channel should be used.

[Yukthi S]

Hi @shailee,

Can you tell me what exactly you are looking for?

[shailee]

Hi,

there is AWGN channel and AWGN generator in simulink.what is the difference between these two?

Answer 1

[Yukthi S]

Hi @shailee,

The "AWGN Channel" block in Simulink adds white Gaussian noise to the input signal by inheriting the sample time from that signal. This block is primarily useful for software-based simulations.

In contrast, the "HDL Implementation of AWGN Generator" is exactly not a block in Simulink but is designed for hardware-friendly architectures and supports HDL code generation. This allows for hardware-based simulations and enables the generated code to be deployed on an FPGA for further analysis. The following MathWorks documentation link can give you more insights on “HDL Implementation of AWGN Generator”:

https://in.mathworks.com/help/releases/R2024a/wireless-hdl/ug/hdlawgngenerator.html

Ensure that both the HDL Coder Toolbox and the Wireless HDL Toolbox are installed on your system before using the model provided in the example above.

Answer 2

[Walter Roberson]

HDL Implementation of AWGN Generator is used in HDL designs. It is specifically designed for HDL use.

AWGN Channel is designed for all other use.