How can I easily convert the resource grid into a time-domain signal in the LTE System Toolbox?

I have a resource grid and would like to easily convert it to a time-domain signal using a function in the LTE System Toolbox

Answer 1

[MathWorks Support Team]

The LTE System Toolbox comes with two functions that will easily convert the resource grid into a time-domain signal. To do this, you can use the 'lteOFDMModulate' function for downlink, and the 'lteSCFDMAModulate' for uplink.

In a general sense, this is accomplished in the function by performing an IFFT on each column of the grid, adding a cyclic prefix and concatenating the signals for each column. To read more details about either function, please see the documentation links below:

lteOFDMModulate:

https://www.mathworks.com/help/lte/ref/lteofdmmodulate.html

lteSCFDMAModulate

https://www.mathworks.com/help/lte/ref/ltescfdmamodulate.html