A method and device for three-dimensional mimo OTA channel modeling

Abstract

The embodiment of the invention provides a three-dimensional MIMO OAT channel modeling method and apparatus. The method comprises the following steps: establishing an initial three-dimensional spherical vector model, wherein the initial three-dimensional spherical vector model comprises M probes, and adjusting the weights of one or more probes in multiple times to obtain an initial population; calculating a fitness value of each initial individual according to each initial individual and a target spatial power spectrum in the initial population; carrying out genetic operation on the initial population to obtain a genetic population; calculating the fitness value of each genetic individual, judging whether an individual whose fitness value is larger than a preset threshold is present, and if so, outputting the genetic individual corresponding to the maximum fitness value as the optimal genetic individual; otherwise, determining the current genetic population as the initial population, and repeatedly carrying out the genetic operation; and finally, determining a three-dimensional spherical vector model according to the optimal genetic individual. Therefore, by adopting the embodiment of the invention, the accuracy of simulating the space characteristics is improved.

Description

technical field [0001] The invention relates to the field of wireless communication applications, in particular to a method and device for three-dimensional MIMO OTA channel modeling. Background technique [0002] In recent years, due to the increasing demand for high data rate and high reliability in communication technology, in order to meet this demand, the performance of terminal equipment is constantly developing towards high data rate and high reliability. Among them, MIMO (Multiple-Input Multiple-Output) technology not only doubles the channel capacity by using multiple antennas to transmit and receive, but also reduces the bit error rate and improves the reliability of the channel. , can greatly improve the performance of the communication system and meet people's needs for communication technology. With the wide application of MIMO technology, MIMO OTA (Multiple-Input Multiple-Output Over-the-Air) technology has gradually entered people's field of vision. MIMO OTA ...

AI Technical Summary

Problems solved by technology

[0003] At present, MIMO OTA technology is mostly used in two-dimensional channel modeling, and the three-dimensional MIMO OTA channel modeling is still in the research and development stage. Among them, the pre-fading synthetic PFS (Pre-Field Synthesis) technology can also be added to the channel simulation by convex optimization algorithm Although it is also possible to extend from two-dimensional MIMO OTA channel modeling to three-dimensional MIMO OTA channel modeling, the convex optimization algorithm obtains the optimal solution through simple calculation without considering the diversity of the solution space. The range is relatively small, so it is difficult to accurately simulate the actual spatial characteristics when using this technology to establish a three-dimensional MIMO OTA channel model

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