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Thread: LTE MIMO : RANK, LAYERS and Antenna ports

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    Default LTE MIMO : RANK, LAYERS and Antenna ports

    Dear Experts,

    When a UE reports a RI=3 for DL MIMO (4x2), could you explain the mapping of data stream to antenna ports ?

    Is it true that, RI =3 means 3 differents data stream at the same time and means 3 layers that will be mapped to 3 antenna ports ? what about the 4th antenna ports in such case ?

    Thanks

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