We have designed a TDM PON network. and it is working fine for downstream transmission. While for upstream transmission, we are applying TDMA access. for this we are transmitting upstream signal from 8 transmitters and each transmitter is transmitting with the increasing delay of 1 unit from the previous one. we also set the signal index and used two unit delay in mid path as shown in attached file.
Now our problem is this for delay =1 only transmitter 1 is transmitting and receiving at OLT successfully. For delay=greater then 1, collision is occurring as signal is transmitting from more then 1 transmitter. Please suggest us the how to implement it (TDMA access) with optisystem.
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