Increase the number of antennas for Vienna LTE-A Uplink Link Level Simulator

Viewing 10 posts - 1 through 10 (of 10 total)
  • Author
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  • #5231
    Seerwan
    Participant

    Dears,
    I want to increase the number of antennas at the base station up to 8 in Vienna LTE-A Uplink Link Level Simulator. Any idea is beneficial for me.

    Regards

    Seerwan

    #5319

    Hi,

    the number of receive antennas at the base station is adjusted via the parameter LTE_params.BS_config.nRX.

    Please specify your question further, beneficial in what sense?

    greetings
    Stefan

    #5324
    Seerwan
    Participant

    Dear Stefan,

    I am grateful for your reply. I have tried to increase LTE_params.BS_config.nRX, but I have found that the max no. of antennas is 4, after 4 the simulator does not work, is it possible to increase LTE_params.BS_config.nRX to be 8 antennas? and what is the modification in the code will be if it is possible ?

    Regards

    Seerwan

    #5334

    Hi,

    which transmission mode do you want to use, single transmit antenna (mode 1) or closed loop spatial multiplexing (mode 4) ?

    greetings
    Stefan

    #5353
    Seerwan
    Participant

    Dear Stefan,

    In fact, I want to use 8 antennas at the base station with any mode, for instance, 8 antennas with mode 1 or mode 4 or mode 9.

    Thanks

    Seerwan

    #5402
    Seerwan
    Participant

    Dear Stefan,

    In fact, I want to use 8 antennas at the base station with any mode, for instance, 8 antennas with mode 1 or mode 4 or mode 9. is that possible just with changing the settings of parameters or it requires some code modification.Please, I am looking forward to your feedback.

    Best Regards

    Seerwan

    #5447

    Hi,

    please be aware that there is no transmission mode 9 available in the LTE-A uplink LL simulator. There are mode 1, single transmit antenna, and mode 4, closed loop spatial multiplexing, currently available. In either of these modes, modifications in the code are necessary to enable for Nrx=8. I will have a look into that.

    greetings
    Stefan

    #5454

    Hi,

    I had a look at modes 1 and 4.

    For mode 4 a number of 8 transmit antennas is actually working without and modification. For mode 1 there is a very small modification necessary:
    In LTE_UL_RX.m change line 144 from

     switch BS.nAtPort
    
    to
    
    

    switch ChanMod.nTX

    greetings
    Stefan

    #5610
    Seerwan
    Participant

    Dear Stefan,

    Many thanks for your help and support. It works now.

    Stefan, I wonder if it is possible to add RRH to the Uplink simulator?

    Best regards,

    Seerwan

    #5789

    Hi,

    the investigation of RRH deployment aspects is more of an system level simulation task and therefore unfortunately not easy to include in our link level uplink simulator.

    greetings
    Stefan

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