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What TM modes are there in LTE?
2.TM2, transmit diversity mode: It is suitable for the complicated and interfering cell edge channels, and sometimes it is also used for high-speed situations.
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3.TM3, open-loop spatial diversity: suitable for high-speed mobile terminals (UE).
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4.TM4, closed-loop spatial diversity: It is suitable for occasions with good channel conditions and is used to provide high data rate transmission.
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5.TM5, MU-MIMO transmission mode: mainly used to improve the capacity of the cell.
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6. Transmission of 6.TM6, Rank 1: mainly applicable to the situation of cell edge.
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7. Single beam forming mode of 7.TM7 and Port5: mainly at the edge of the cell, which can effectively resist interference.
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8.TM8, dual-stream beamforming mode: It can be used in scenes such as cell edge.
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9.TM9, transmission mode 9 is a newly added mode in LTE-A, which supports at most 8 layers of transmission, mainly to improve the data transmission rate.
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