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Three-dimensional double moving MIMO (Multiple Input Multiple Output) propagation channel modeling and simulation method

A technology of propagation channel and simulation method, which is applied in the field of modeling and simulation of three-dimensional dual-mobile MIMO propagation channel, and can solve the problem that the channel model and simulation method are limited to the two-dimensional incident form.

Active Publication Date: 2016-09-28
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0003] Establishing an accurate and effective MIMO channel model is the theoretical basis for realizing a MIMO mobile communication system and establishing a transmission strategy, but most of the existing mature channel models and simulation methods are limited to two-dimensional incident forms

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  • Three-dimensional double moving MIMO (Multiple Input Multiple Output) propagation channel modeling and simulation method

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Embodiment Construction

[0036] The modeling and simulation method of the three-dimensional dual mobile MIMO propagation channel of the present invention comprises the following steps:

[0037] Step 1: Considering the three-dimensional propagation of the transmitted and received signals, the dual mobile MIMO channel model is established as follows

[0038]

[0039] Among them, a r (α r ,β r ), a t (α t ,β t ) are the steering vectors of the receiving and transmitting antenna arrays respectively; α r / α t is the azimuth angle of the receiving / transmitting terminal (the angle between the projection of the incident signal and the x-axis), β r / β t is the pitch angle of the receiving / transmitting end (the angle between the incident signal and the xoy plane); p(α t ,β t ) is the joint probability density function of the departure angle of the transmitted signal, p(α r ,β r ) is the joint probability density function of the angle of arrival of the received signal; Add a phase shift for the ...

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Abstract

The invention provides a three-dimensional double moving MIMO (Multiple Input Multiple Output) propagation channel modeling and simulation method, which is applied to communication system optimization research and system performance evaluation. In a three-dimensional double moving MIMO propagation system, the modeling and simulation implementation method comprises the steps of carrying out theoretical modeling on a three-dimensional double moving MIMO propagation channel so as to acquire a theoretical mathematic model thereof; converting the theoretical mathematic model into an accumulation model which is convenient for simulation implementation; respectively calculating a value of a three-dimensional discrete arrival angle / departure angle by using joint distribution characteristics of an azimuth angle / pitch angle which is designated or measured by a user; calculating the Doppler frequency shift of a receiving terminal and the Doppler frequency shift of a transmitting terminal by using the moving speed and the moving direction of the receiving terminal and the transmitting terminal and the three-dimensional departure angle / arrival angle; acquiring guide vector matrixes of the receiving terminal and the transmitting terminal by using array antenna flow patterns of the receiving terminal and the transmitting terminal; and substituting the three-dimensional discrete arrival angle / departure angle, the receiving / transmitting terminal Doppler frequency shift, and the receiving / transmitting terminal guide vector matrix into an accumulation form expression of the three-dimensional double moving MIMO propagation channel, and calculating to acquire the three-dimensional double moving MIMO propagation channel.

Description

Technical field: [0001] The invention relates to a modeling and simulation method of a wireless channel, which belongs to the field of wireless communication, and is specifically a three-dimensional dual movement that comprehensively considers the dual movement of the receiving and receiving ends, the joint distribution of azimuth angle / pitch angle, Doppler frequency shift, and antenna array. Modeling and simulation methods for MIMO propagation channels. Background technique: [0002] Multiple Input Multiple Output (MIMO) technology is a key technology in the current wireless mobile communication field. It can make full use of multiple antennas in space and effectively combat wireless channel fading without increasing bandwidth or transmission power, thereby Greatly improve the spectrum utilization and capacity of the system, and realize high-speed data transmission. [0003] Establishing an accurate and effective MIMO channel model is the theoretical basis for realizing a ...

Claims

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Application Information

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IPC IPC(8): H04B17/391H04B17/00H04B7/04
CPCH04B7/0413H04B17/0087H04B17/3911
Inventor 薛翠薇朱秋明闭宇铭陈小敏王成华杨颖
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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