Regarding nRF24L01+ Transceiver simulation using Simulink

[AmirHafez]

Hello there,

I'm trying to make a transceiver simulation on nRF24L01+ using Simulink. The block diagram provided in the documentation/datasheet was not clear enough for me. For example the Tx or Rx Filters after the GFSK Modulation block. what are they? How can I represent them in Simulink? Is there anyone that has presented a Simulink model of the nRF24L01+ model? The project is based on audio transmission between transceivers which are mainly used for Active Noise Control Application.

[ketiljo]

The RX filter is the IF filter and the TX filter is the gaussian filter to reduce the bandwidth so that the modulation becomes GFSK. No idea how you can represent them in Simulink, sorry. 

[AmirHafez]

Sorry I'm way too late to ask about it. If you say that the TX filter is reducing the bandwidth then why do we have a filter if the GFSK Modulator is already present?.. Also what is the Filter coefficients for both transmitter and receiver??

[ketiljo]

The filter for the RX and TX have different purposes. For the TX, the filter shapes the waveform to generate a GFSK modulated carrier. BT here is 0.5. For the RX, the filter shown in  the block diagram is the IF filter. Bandwidth approx 4 MHz. 

[AmirHafez]

Ok i figured out the TX filter. It is FIR Gaussian Pulse Shaping Filter with BT = 0.5, correct? And for the RX what is the type of IF Filter?

Edit: For BT at TX filter did you mean 0.5 MHz Bandwidth?

[AmirHafez]

Would you please also tell me what are the orders of the FIR filters? or the pulse length of the gaussian filter?

[ketiljo]

I'm sorry, but this is information I can't give you.