Statistics channel computing method based on asymmetric spatial structure and non-uniform scatterers

A technology of spatial structure and spatial statistics, applied in the direction of space transmit diversity, baseband system components, diversity/multi-antenna system, etc., can solve the problems of asymmetric distribution environment, lack of physical concept statistical channel simulation model, etc.

CN103716264AActive Publication Date: 2014-04-09NANJING UNIV OF INFORMATION SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-04-09

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Abstract

The invention discloses a computing method for comprehensively improving spatial statistics channels for an asymmetric spatial structure evenly provided with non-uniform scatterers, wherein mobile communication environments such as macro cells and micro cells can be estimated accurately, flexibly and conveniently, and estimation accuracy of channel parameters such as the reaching angle and reaching time of electromagnetic signals and the channel capacity performance in an MIMO system can be improved effectively. The statistics channel computing method based on the asymmetric spatial structure and the non-uniform scatterers is achieved based on an asymmetric spatial statistics channel model, wherein the asymmetric spatial statistics channel model comprises a mobile station and a base station, a directional antenna is arranged in the base station, and all the scatterers are distributed in a fan-shaped scattering area covered by the antenna of the base station in a non-uniform mode and meet the Gaussian distribution mode or exponential distribution mode. The statistics channel computing method comprises the steps of computing a distribution density function expression of polar coordinates of the scatterers, computing a probability density function of the reaching angle and the reaching time, and computing the channel capacity.
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Description

technical field

[0001] The invention belongs to the technical field of multi-antenna MIMO channel modeling, and in particular relates to a statistical channel calculation method based on an asymmetrical space structure and distributed with non-uniform scatterers. Background technique

[0002] Mobile communication is a technology that uses wireless channels for information transmission. The wireless channel is easily affected by various noises, interference and other channel factors, and the system is subject to great uncertainty due to the user's movement and channel dynamics, which seriously affects the communication efficiency and quality. Therefore, the wireless channel must become a A reliable high-speed communication medium has severe challenges, and the research on wireless channels has been concerned and valued by researchers for many years. Establishing a wireless channel model that accurately describes channel multipath effects is also an important basis for analyz...

Examples

Embodiment Construction

[0072] The technical solutions provided by the present invention will be described in detail below in conjunction with specific examples. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0073] To realize the statistical channel calculation method based on the asymmetric spatial structure / non-uniform scatterer distribution proposed by the present invention, first

[0074] To establish an asymmetric spatial statistical channel model: assume that a directional antenna is set in a cell base station (BS: base station), and the cell is subdivided into several sector cells under the coverage of the antenna. In the channel model, the distance between the mobile station (MS: mobile station) and the base station (BS: base station) is D, and all scatterers are distributed in the fan-shaped scattering area R with the BS as the coverage cell, such as figure ...