Fading correlation method of MIMO signal based on von Mises Fisher distribution

A signal fading and correlation technology, applied in the directions of space transmit diversity, diversity/multi-antenna system, transmission monitoring, etc., can solve the problem of complex incident angle and achieve the effect of improving channel capacity

Active Publication Date: 2018-01-30
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

This is greatly inconsistent with the actual communication and mobile environment, and its angle of incidence will be more complicated

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  • Fading correlation method of MIMO signal based on von Mises Fisher distribution
  • Fading correlation method of MIMO signal based on von Mises Fisher distribution
  • Fading correlation method of MIMO signal based on von Mises Fisher distribution

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[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] figure 1 It is a three-dimensional space multi-antenna MIMO model based on the distribution of Von Mises Fisher scatterers. The scatterers are distributed on the surface of a three-dimensional space sphere and obey the Von Mises Fisher distribution:

[0047]

[0048] where μ is the average direction vector of the scatterer cluster (||μ||=1), in polar coordinates

[0049] θ 0 and are the average arrival azimuth angle and average arrival elevation angle of the scatterer cluster, k is the expansion factor of the scatterer cluster around μ, and k≥0.

[0050] The wireless channel model ...

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Abstract

The invention relates to an MIMO (multiple input multiple output) signal fading correlation algorithm based on Von Mises Fisher distribution. The MIMO signal fading correlation algorithm based on the Von Mises Fisher distribution includes the following steps: step 1, building a three dimension space multiple antenna MIMO model based on the Von Mises Fisher scattering body distribution; step 2, building a three dimension space multiple antenna MIMO antenna array; step 3, calculating MIMO signal fading correlation. The MIMO signal fading correlation algorithm based on the Von Mises Fisher distribution builds a three dimension MIMO antenna array model, considers non-independence between an azimuth angle and a pitch angle, uses the Von Mises Fisher distribution to describe a relation between the azimuth angle and the pitch angle, expands study and application ranges of a spatial statistics channel model, and provides a powerful tool for evaluating a multiple antenna MIMO system space time processing algorithm and a simulation wireless communication system.

Description

technical field [0001] The invention relates to the field of MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) receiver signal fading correlation algorithm, in particular to the MIMO signal fading correlation algorithm based on Von Mises Fisher distribution. Background technique [0002] In recent years, MIMO systems can be equipped with multiple antennas at the receiving end and the transmitting end, which can effectively use the multipath signals in the spatial channel to improve performance and increase the coverage of the wireless system. Utilizing the spatial multiplexing gain and spatial diversity gain of MIMO can not only increase the capacity of the wireless channel but also improve the transmission reliability of the wireless channel and reduce the bit error rate. Just because of these advantages of MIMO system, MIMO antenna system has become the focus of research in the development of wireless communication technology. Due to the continuous min...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/391H04B7/08
Inventor 罗宏曹志钢周杰
Owner NANJING UNIV OF INFORMATION SCI & TECH
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