5G NR Downlink Carrier Waveform Generation

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Javier Sola morras
Javier Sola morras le 12 Avr 2020
I'd like to know what value to assign to
bwp(1).NRB = ?;
bwp(2).NRB = ?;
For simulations with different SCS and Channel Bandwidth values than the toolbox example

Réponse acceptée

Sriram Tadavarty
Sriram Tadavarty le 27 Avr 2020
Hi Javier,
You can provide any values. But the best guide to run different simulations is the Transmission bandwidth configurations provided in the standard spec of TS 38.104 Section 5.3.2.
For example to configure a value of Channel Bandwidth of 30 MHz of 15 kHz SCS and 50 MHz bandwidth of 60 kHz SCS, make the following updates to carrier structure and bwp structure:
% Carriers Configuration
carriers = [];
carriers(1).SubcarrierSpacing = 15; % 15 kHz
carriers(1).NRB = 160; % 160 resource blocks comprise 30 MHz bandwidth
carriers(1).RBStart = 0;
carriers(2).SubcarrierSpacing = 60; % 60 kHz
carriers(2).NRB = 65; % 65 resource blocks comprise to 50 MHz bandwidth
carriers(2).RBStart = 0;
% Bandwidth parts configuration (Occupying complete carrier for both numerologies)
bwp = [];
bwp(1).SubcarrierSpacing = carriers(1).SubcarrierSpacing; % BWP Subcarrier Spacing same as carrier subcarrier spacing 1
bwp(1).CyclicPrefix = 'Normal'; % BWP Cyclic prefix for 15 kHz
bwp(1).NRB = carriers(1).NRB; % Size of BWP
bwp(1).RBOffset = 0; % Position of BWP in SCS carrier
bwp(2).SubcarrierSpacing = carriers(2).SubcarrierSpacing; % BWP Subcarrier Spacing
bwp(2).CyclicPrefix = 'Normal'; % BWP Cyclic prefix for 60 kHz
bwp(2).NRB = carriers(2).NRB; % Size of BWP
bwp(2).RBOffset = 0; % Position of BWP in SCS carrier
This will generate the output waveform for both the numerologies.
Hope this helps.
Regards,
Sriram
  9 commentaires
Sriram Tadavarty
Sriram Tadavarty le 14 Mar 2022
Hi Jyotirmayee,
You can assign some random value, for which you wanted to do the analysis.
Regards,
Sriram
Jyotirmayee Subudhi
Jyotirmayee Subudhi le 15 Mar 2022
It is really helpful.
Thank you Sriram.

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