Device for realizing beamforming by utilizing MIMO (multiple input multiple output) at 4G (fourth generation) mobile terminal

A mobile terminal and beamforming technology, applied in space transmit diversity, diversity/multi-antenna systems, etc., can solve problems such as limited spectrum utilization, limited increase in wireless link channel capacity, complex circuits, etc., to improve the utilization of spectrum resources rate and channel capacity, significant production practice significance, and the effect of improving system performance

CN102412884AInactive Publication Date: 2012-04-11TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-04-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a device for realizing beamforming by utilizing MIMO (multiple input multiple output) at a 4G (fourth generation) mobile terminal, relates to the technical field of mobile communication and particularly relates to a device for realizing beamforming by utilizing MIMO at a 4G mobile terminal. The device for realizing beamforming by utilizing the MIMO at the 4G mobile terminal is formed by connecting a feed system, a power divider, a phase shifter, a T / R (transmitter / receiver) assembly and an antenna, wherein the feed system is connected with the power divider, and the phase shifter is connected with the power divider; and the power divider is connected with the T / R assembly, and the T / R assembly is connected with the antenna. The device disclosed by the invention can fully utilize space resources by use of an MIMO technology and can be used for effectively resisting the influence of wireless channel fading and greatly improving the system frequency spectrum resource utilization rate and the channel capacity under the condition of not increasing the system bandwidth and the total transmission power of the antenna; and an innovative design is adopted, so that the system performance is improved, simultaneously the circuit complexity is reduced and the system cost is lowered.
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Description

technical field

[0001] The invention relates to the technical field of wireless mobile communication, in particular to a device for implementing beamforming by using MIMO in a 4G mobile terminal. Background technique

[0002] With the continuous development of various wireless communication services and broadband data services, wireless resources, especially spectrum resources, are becoming more and more scarce. How to use these limited communication resources more efficiently has become the focus of the development of new wireless communication technologies. Smart antennas came into being in this environment. The basic idea of ​​smart antennas is: to use the spatial characteristics of signal transmission to adaptively control beamforming, adjust its pattern, track strong signals, reduce or offset interference signals, and improve the performance-to-interference ratio. , so as to achieve the purpose of reducing signal transmission power and improving system capacity. [000...

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Embodiment Construction

[0014] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0015] In order to avoid selective fading in the frequency domain caused by multipath effects, improve spectrum utilization and channel capacity, and reduce system radiation, complexity and cost, the present invention provides a device for implementing beamforming using MIMO in a 4G mobile terminal. See the description below for details:

[0016] Because the traditional mobile terminal uses a single antenna, the channel capacity and spectrum utilization are low, and it cannot meet the high-speed growth of mobile users and mobile multimedia services based on high-speed data transmission efficiency. In addition, due to the characteristics of mobile communications, data transmission The process will be affected by various terrains, buildings an...