How to configure Random Integer Generators in Simulink

Hello all,

I am trying to design a communication system that consists of 2 sources, 1 relay node (Figure 1) and 2 destinations as subsystems in Simulink. You can see a part of this system in Figure 1 and what is inside of the source subsystems in Figure 2. Random integer generators in source subsystems generate frames of bits, modulate and forward them to the relay node. Then, the relay node demodulates them and performs some network coding operations.

My goal is configuring the sources in a way that the first source sends its frame of bits to the relay node in the first time slot and waits in the second time slot. Also, the second source should wait during the first time slot and it should send its frame of bits at the second time slot.

Do you think that it is possible to design such a system? (I've just tried to do this using delay blocks, but I could not obtain desirable results.)

Thanks in advance.

Esra

[sloppydisk]

I don't know much about this, but have you read

doc rng

?