Method for simulating propagation characteristics of 3D scattering space coupling fading related channel
A technology of spatial coupling and propagation characteristics, applied in the field of wireless communication, can solve problems such as insufficient system modeling
Active Publication Date: 2021-03-16
HOHAI UNIV
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However, the authors of these two papers only considered the influence of the 3D spatial scattering environment, ignoring the large-scale MIMO base station side (especially indoor base stations) and mobile terminals when using MIMO technology, due to the limited size of the antenna array element assembly space. The influence of the electromagnetic coupling effect between the receiving antennas and the influence of small-scale fading in the scattering environment lead to incomplete system modeling
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[0032]The present invention will be further described below in conjunction with specific examples.
[0033] A method for simulating 3D scattering spatially coupled fading correlation channel propagation characteristics, comprising the steps of:
[0034] Combined with the definition of channel gain, the antenna T of the transmitting end is obtained p with the receiver antenna R m The channel complex gain between can be expressed as:
[0035]
[0036] In the formula, Indicates the antenna T p The incident source vector of , Indicates the antenna R m The receiving electric field vector of , Ω is the solid angle (θ, φ) and dΩ=sinθdθdφ; assuming that there are K scatterers with three-dimensional distribution around the receiving antenna, then S i (θ, φ), i=1,...,K represents the random distribution of scatterers, where θ is the angle between the vector and the Z axis, and φ is the angle between the vector and the X axis after it is projected on the X-Y plane. A represen...
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The invention discloses a method for simulating propagation characteristics of a 3D scattering space coupling fading related channel, which is based on a classic Clark plane single-loop scattering model and comprises the following steps: expanding a two-dimensional model into a three-dimensional spherical scattering model; meanwhile, designing a novel three-dimensional spherical scattering channelmodel suitable for coupling a large-scale MIMO system by introducing important influence factors such as Nakagami-m small-scale fading and an electromagnetic coupling effect between antenna array elements, which accord with an actual transmission environment, so that the channel modeling content of the existing 3GPP 3D-MIMO system is perfected. Therefore, the radio wave transmission characteristics and the system performance of a new generation compact multi-antenna transmission system can be simulated and evaluated. The multi-antenna three-dimensional closed-space propagation environment characteristic considering the electromagnetic coupling effect between the antenna array elements and small-scale fading can be approximated to the maximum extent, and services and references can be provided for software and hardware design and performance simulation and evaluation of a mobile communication system.
Description
technical field [0001] The invention relates to a method for simulating 3D scattering space coupling fading correlation channel propagation characteristics, belonging to the technical field of wireless communication. Background technique [0002] In the initial stage of the MIMO communication system, researchers analyzed the multi-antenna signals by assuming that the multi-antenna signals are transmitted in a two-dimensional plane, and the signals between the antennas are fading uncorrelated (that is, independent and identically distributed). The maximum transmission rate or channel capacity of the system. However, in the actual propagation environment, the lack of abundance of scatterers around the antenna elements and the complexity of the propagation environment will lead to a certain degree of spatial correlation between the signals, that is, they cannot be simply regarded as independent , which leads to a large gap between the system capacity obtained by classical MIMO...
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IPC IPC(8): H04B7/0413H04B7/06H04B7/08H04B17/391
CPCH04B7/0413H04B7/063H04B7/0897H04B17/391
Inventor 李岳衡夏泽林李敏居美艳黄平
Owner HOHAI UNIV