Radio frequency and base band mixing pre-coding method for 3D (three dimensional)-MIMO (Multiple Input Multiple Output) system
A 3D-MIMO and precoding technology, applied in the field of wireless communication, can solve problems such as low implementation cost and low feedback load
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[0068] In order to facilitate the understanding of the purpose, technical solutions and effects of the present invention, the present invention will now be further described in detail in conjunction with embodiments.
[0069] This embodiment provides a hybrid precoding method of radio frequency and baseband for a 3D-MIMO system. Consider the downlink single-user scenario, the base station is configured with a uniform rectangular array, assuming that the array elements are arranged as N az Column N el OK, that is, the number of base station antennas is N t =N el ×N az , The number of RF chains is The number of downstream data streams is The number of antennas at the user end is N r . For the sake of generality, suppose the number of antennas at the user end is N r = 1.
[0070] Such as figure 1 As shown, the specific implementation steps of the radio frequency and baseband hybrid precoding method of the 3D-MIMO system are as follows:
[0071] Step 1. Channel estimation and correla...
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