Channel Model for MU-MIMO

nt.tuwien.ac.at > Topics > channel, MU-MIMO > Channel Model for MU-MIMO

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  • This topic has 2 replies, 2 voices, and was last updated 5 years ago by yang.
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  • 1. August 2016 at 11:04 #5877
    yang
    Participant

    Hi, everyone

    My simulator is LTE-A Link Level Simulator, v1.3.

    There are many channel model types which include ‘PedA’, ‘PedB’, ‘PedBcorr’, ‘AWGN’, ‘flat Rayleigh’,’VehA’,’VehB’,’TU’,’RA’,’HT’,’winner_II.’
    However, for MU-MIMO simulation, except ‘flat Rayleigh’ channel model, it shows “Index exceeds matrix dimensions.” error in channel_quantizers.LTE_hq_pred_grassmann_adaptiv_dir_tf/compute_ACF.

    Is only ‘flat Rayleigh’ supported for MU-MIMO? Or, how do I change the simulation(configuration) setting to simulate other channel model for MU-MIMO successfully?

    1. August 2016 at 11:23 #5882
    Stefan Schwarz
    Participant

    Hi guys,

    in case of LTE-A Downlink: yes zero-forcing MU-MIMO with LIMITED FEEDBACK is only supported over frequency flat channels. With PERFECT feedback, however, it also work over frequency-selective channels (see LTEA_sim_batch_quick_test_MUMIMO “sim_ind = 1” and “sim_ind = 2”).

    Best,
    Stefan.

    1. August 2016 at 16:49 #5887
    yang
    Participant

    Hi, Dr.Schwarz
    Thanks for your reply.

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