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

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.

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...

AI Technical Summary

Problems solved by technology

[0004] However, the above existing technologies still have the following disadvantages and deficiencies: the traditional smart antenna terminal is only equipped with multiple antenna elements at the transmitting end or receiving end, usually at the base station, and the channel capacity of the wireless link is limited; the signal transmission process is due to multiple Frequency-domain selective fading caused by path effect, limited spectrum utilization; large system radiation, complex circuit, high production cost

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