5G-oriented multidimensional adaptive MIMO system and method thereof for adjusting radiating modes of antenna ports

A 5th Generation (5G)-oriented multidimensional adaptive Multiple Input Multiple Output (MIMO) system, comprising a transmitting antenna array, a first rotary table, a broadband vector signal generator, a receiving antenna array, a second rotary table, a broadband vector signal analyzer and a data acquisition terminal,

• wherein the transmitting antenna array is connected with the first rotary table which is configured to control the transmitting antenna array to rotate 360 degrees,
• wherein the broadband vector signal generator is connected with the transmitting antenna array and is configured to generate a wireless signal, and the transmitting antenna array is configured to transmit the wireless signal,
• wherein the receiving antenna array is connected with the second rotary table which is configured to control the receiving antenna array to rotate 360 degrees,
• wherein the receiving antenna array is configured to receive the wireless signal transmitted by the transmitting antenna array,
• wherein the broadband vector signal analyzer is connected with the receiving antenna array and is configured to analyze the wireless signal received by the receiving antenna array, and
• wherein the data acquisition terminal is connected with the broadband vector signal generator and the broadband vector signal analyzer, and the data acquisition terminal is configured to acquire, store and calculate wireless signal data,
• wherein the transmitting antenna array comprises NBP transmitting antennas U11, . . . , U1NBP-1, U1NBP, wherein NBP is the number of the transmitting antennas in the transmitting antenna array, wherein each transmitting antenna corresponds to one group of antenna elements disposed in a vertical domain, wherein the transmitting antenna U11 comprises an antenna port U111, a plurality of weight vectors U121 (β1(θe)), U122 (β2(θe)), . . . , U12Ne (βNe(θe)), and a plurality of antenna elements U131, U132, . . . , U13Ne, and Ne is the number of the antenna elements or the weight vectors corresponding to each transmitting antenna, and the rest of the transmitting antennas are done in the same manner, wherein θe is an antenna element downward inclination angle, and β1, β2, . . . , βNe are constants,
• wherein the data acquisition terminal is configured to dynamically adjusting the radiating modes of the antenna ports by controlling an antenna element azimuth angle, an antenna element elevation angle and the antenna element downward inclination angle θe which are applied to the antenna elements,
• wherein the radiating modes of the antenna ports are expressed by the formula below:
• X
• _
• =
• W
• _
• ⁢
• V
• _
• =
• [
• v
• 1
• 1
• v
• 1
• 2
• …
• v
• 1
• j
• v
• 2
• 1
• v
• 2
• 2
• …
• v
• 2
• j
• …
• …
• …
• …
• v
• i
• 1
• v
• i
• 2
• …
• v
• i
• j
• ]
• ⁡
• [
• w
• 1
• 1
• w
• 1
• 2
• …
• w
• 1
• j
• w
• 2
• 1
• w
• 2
• 2
• …
• w
• 2
• j
• …
• …
• …
• …
• w
• i
• 1
• w
• i
• 2
• …
• w
• i
• j
• ]
• ,
• wherein W is a weight vector matrix of Ne×NBP antenna elements, and V is a radiating response matrix of the Ne×NBP antenna elements,
• wherein a radiating response vij of the jth antenna element in the ith antenna port is expressed as:
• v
• i
• j
• =
• exp
• ⁡
• (
• 2
• ⁢
• ⁢
• π
• ⁡
• (
• (
• i
• -
• 1
• )
• ⁢
• d
• y
• λ
• ⁢
• sin
• ⁢
• ⁢
• ϕ
• ⁢
• ⁢
• sin
• ⁢
• ⁢
• θ
• +
• (
• j
• -
• 1
• )
• ⁢
• d
• z
• λ
• ⁢
• cos
• ⁢
• ⁢
• θ
• )
• )
• ,
• wherein the weight vector wij of the jth antenna element in the ith antenna port is expressed as:
• w
• i
• j
• =
• 1
• N
• e
• ⁢
• N
• BP
• ⁢
• exp
• ⁡
• (
• -
• 2
• ⁢
• ⁢
• π
• ⁡
• (
• (
• i
• -
• 1
• )
• ⁢
• d
• y
• λ
• ⁢
• ⁢
• sin
• ⁢
• ⁢
• θ
• e
• +
• (
• j
• -
• 1
• )
• ⁢
• d
• z
• λ
• ⁢
• cos
• ⁢
• ⁢
• θ
• e
• )
• )
• ,
• wherein dy is a horizontal distance between the antenna ports, and dz is a vertical distance between the antenna elements, ϕ is an antenna azimuth angle, and θ is an antenna element elevation angle.