[yang]

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?

[Stefan Schwarz]

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.

[yang]

Hi, Dr.Schwarz
Thanks for your reply.

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