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Multiple-input-multiple-output broadband satellite mobile communication channel modeling method based on dual-orthogonal-polarization antenna

A satellite mobile communication, polarized antenna technology, applied in wireless communication, diversity/multi-antenna system, space transmit diversity and other directions, can solve the problem of serious coupling phenomenon, small antenna group spacing, unable to guarantee the channel independence between antennas, etc.

Inactive Publication Date: 2014-04-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0003] In the broadband MIMO satellite mobile communication system, the size of a single satellite and mobile terminal is limited, the distance between the antenna groups is small, and the coupling phenomenon is serious, which cannot guarantee good channel independence between antennas

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  • Multiple-input-multiple-output broadband satellite mobile communication channel modeling method based on dual-orthogonal-polarization antenna
  • Multiple-input-multiple-output broadband satellite mobile communication channel modeling method based on dual-orthogonal-polarization antenna
  • Multiple-input-multiple-output broadband satellite mobile communication channel modeling method based on dual-orthogonal-polarization antenna

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Embodiment Construction

[0035] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] The technical problem to be solved by the invention is how to establish an accurate, complete and practical MIMO broadband satellite mobile communication channel model based on dual orthogonal polarization antennas. In order to solve the above-mentioned technical problems, the present invention adopts the following channel modeling steps and implements them in specific ways under each step.

[0037] Step 1. Determine the number of communication scenarios in a communication process according to the mobile satellite communication parameters, such as frequency band, elevation angle and the environment of the receiving terminal;

[0038] On the premise that the communication frequency band is determined, the change of the communication angle and the change of the communication environment where the terminal is located...

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Abstract

The invention provides a multiple-input-multiple-output broadband satellite mobile communication channel modeling method based on a dual-orthogonal-polarization antenna. With five modeling steps of the method, selection of channel model parameters, realization of a Markov process of a mobile communication channel, generation of a time sequence of each Markov state channel, adding of time correlation of a broadband state channel time sequence and superstition of channel polarization characteristics and correlation between antennas are respectively realized. According to the multiple-input-multiple-output broadband satellite mobile communication channel modeling method based on the dual-orthogonal-polarization antenna, broadband characteristics of the channels, such as frequency selection fading, time selectivity fading and broadband Markov state characteristics, are considered, and influence of the channel polarization characteristics and the spatial correlation between the antennas on the channel characteristics after application of the dual-orthogonal-polarization antenna is also considered. The broadband satellite mobile communication channel modeling method is more accurate and comprehensive so that the channel characteristics of multiple-input-multiple-output broadband satellite mobile communication on the basis of the dual-orthogonal-polarization antenna can be more realistically reflected.

Description

Technical field: [0001] The invention relates to a multi-input multi-output satellite mobile communication system, in particular to a multi-input multi-output broadband satellite mobile communication channel modeling method based on dual orthogonally polarized antennas. Background technique: [0002] Appropriate application of MIMO (Multi-Input and Multi-Output) technology can greatly improve the channel capacity and diversity gain of the mobile communication system, and can resist channel multipath fading. For example, in ground communication, MIMO technology has been included in the 4G system standard. In wideband MIMO satellite mobile communication systems, direct signals are usually the mainstay. Although the application of MIMO technology has no obvious effect against multipath fading, it can still obtain high channel capacity gain and diversity gain, and has a good application prospect. [0003] In the broadband MIMO satellite mobile communication system, the size of ...

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Application Information

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IPC IPC(8): H04W16/22H04B7/04
Inventor 井庆丰严晓菊仲伟志刘鑫
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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