Reply To: Massive MIMO Simulation -spatialChannelModel


Thanks for your Reply Mariam. Reference Massive MIMO scenario, For TDD mode, since The wireless channel is estimated from the pilots in the uplink transmission. The channel estimated in the uplink phase is then used to calculate the feedback parameters (beamforming) for the downlink transmission which facilitates multi-user MIMO transmissions with a high number of antennas, as there is no pilot overhead needed in the downlink transmission phase, my question is why the performance of TDD is still low as compared to TDD for low number as well as high number of antennas, where UE velocity is low ?