A method for simulating propagation characteristics of a fading channel in a coupling multi-antenna indoor space

Abstract

The invention discloses a method for simulating propagation characteristics of a fading channel in a coupled multi-antenna indoor space. The method comprises the following steps: (1) generating an lthcluster transmitting angle and an lth cluster receiving angle which are randomly distributed; (2) generating a transmitting deviation angle and a receiving deviation angle conforming to the k sub-path in the l cluster of the transmitting end and the receiving end which are in Laplace distribution; Generating an emission angle of an lth cluster and a kth sub-path of the transmittingend; (3) generating an arrival angle of the k subpath in the l cluster of the receiving end; (4) generating the amplitude of each sub-path conforming to Rayleigh distribution; Generatinga phase of each sub-path obeying [0, 2] uniform distribution; (5) generating logarithmic normal shadow fading numerical random variables; (6) generating a guide vector of each antenna by combining the antenna layout; And (7) generating a channel transmission matrix of the whole tight coupling MIMO system. According to the method, the influence of large-scale shadow fading and the array element electromagnetic coupling effect in an indoor propagation environment is fully considered, and the channel characteristics of the indoor MIMO multi-antenna transmission system are accurately simulated and evaluated.

Description

technical field [0001] The invention relates to a method for simulating the propagation characteristics of a coupled multi-antenna indoor space fading channel, and is especially suitable for complex indoor multi-antenna wireless communication scenarios that comprehensively consider log-normal shadow effects, small-scale fading, and antenna electromagnetic coupling effects. Background technique [0002] Radio signals are easily affected by obstacles during indoor propagation, resulting in various physical phenomena such as reflection, refraction, and diffraction, which cause the electrical signal received by the receiving end to be a fading signal with a large amount of time expansion and angle expansion. According to the transmission characteristics of classical space fading signals, fading mainly includes small-scale fading and large-scale fading. [0003] The SVA (Saleh-Valenzuela AOA / AOD) channel model is a typical indoor channel model. Although this model can effectively...

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Problems solved by technology

[0005] In addition, the wide application of large-scale multi-antenna transmission technology in the new generation of wireless communication systems makes it necessary to configure a large number of antennas in a very small space at both the transmitter and the receiver, which will inevitably Generate electromagnetic coupling effects between array elements; existing theoretical studies have shown that electromagnetic coupling effects will have a great impact on the performance of MIMO (Multiple Input Multiple Output) systems

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