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Bilateral large-scale distributed MIMO implementation method, a base station and a terminal system

A technology of base station system and implementation method, applied in diversity/multi-antenna system, transmission system, radio transmission system, etc., to achieve good reliability, high spatial multiplexing capability, and avoid handover

Active Publication Date: 2021-11-16
SOUTHEAST UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a bilateral large-scale distributed MIMO implementation method, a base station and a terminal system to solve how to realize seamless coverage, completely avoid switching, improve system performance and reliability, realize multi-stream multiplexing transmission, and reduce system implementation costs. complex technical issues

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  • Bilateral large-scale distributed MIMO implementation method, a base station and a terminal system

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Embodiment Construction

[0035] In order to better understand the purpose, structure and function of the present invention, the implementation method, base station and terminal system of the present invention will be further described in detail in conjunction with the accompanying drawings.

[0036] Such as figure 1 As shown, it is a schematic structural diagram of bilateral large-scale distributed MIMO applied to high-speed rail communication of the present invention. The train end system includes a distributed antenna unit M-DRU, a central processing unit M-CPU of a mobile terminal, and multiple M - The DRU is connected to the M-CPU through a high-speed link. Each distributed antenna unit M-DRU is configured with multiple antennas. Signal transmission and reception or omnidirectional transmission and reception at the angle of the receiver; the total number of antennas of all distributed antenna units M-DRU in the train end system is greater than the number of train cars; M-DRU completes the transmis...

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Abstract

The invention discloses a bilateral large-scale distributed MIMO implementation method, a base station and a terminal system. The base station system comprises a plurality of B-DRUs, a B-CPU and a CU, wherein the plurality of B-DRUs are connected to the B-CPU through a high-speed forward link. The terminal system comprises M-DRUs and an M-CPU, and the M-DRUs are connected to the M-CPU through high-speed links. The system works in a time division duplex mode and a frequency division duplex mode. The uplink and the B-DRU complete distributed receiving of uplink signals and jointly decode the uplink signals at the B-CPU or jointly receive and decode the uplink signals at the B-CPU, and the downlink and the base station system complete distributed pre-coding sending at the B-DRU or jointly pre-coding sending of downlink signals by the B-CPU. According to the invention, seamless coverage is realized, switching is thoroughly avoided, any pre-coding can be adopted, multi-stream pre-coding with relatively low complexity is realized, the power efficiency of the system is improved, and the reliability of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication transmission, and in particular relates to a method for realizing bilateral large-scale distributed MIMO, a base station and a terminal system. Background technique [0002] High-speed rail communication is a short board in the existing wireless communication application scenarios. The main problems it faces include the large Doppler frequency deviation in the system caused by high-speed movement, which makes it difficult to obtain channel information, which in turn leads to system reliability. And the transmission rate of the communication drops. [0003] In high-speed rail communication, in order to provide good coverage stably, the traditional method is to use leaky cables. At present, leaky cables are widely deployed in high-speed rail communication scenarios such as tunnels and elevated roads. However, leaky cables are costly to deploy and are limited in supporting multi-ante...

Claims

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Application Information

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IPC IPC(8): H04B7/0456H04B7/0413H04B7/06H04B7/08H04B7/0404H04W88/08H04W88/02
CPCH04B7/0456H04B7/0413H04B7/0617H04B7/086H04B7/0404H04W88/08H04W88/02Y02D30/70
Inventor 王东明凌捷侯晓赟赵新胜陈建平宋铁成尤肖虎
Owner SOUTHEAST UNIV
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