A method and device for large-scale mimo channel simulation with high bandwidth

A channel simulation, large-scale technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve problems such as difficulty in accuracy and consistency, branch simulation deviation, etc., to achieve fixed resource consumption, ensure consistency, and achieve data The effect of alignment

Active Publication Date: 2018-12-28
SOUTHEAST UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, it is difficult to ensure the accuracy and consistency of the distribution and merging of the branches of the broadband analog signal, resulting in the deviation of the simulation of each branch

Method used

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  • A method and device for large-scale mimo channel simulation with high bandwidth
  • A method and device for large-scale mimo channel simulation with high bandwidth

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with specific drawings.

[0040] Such as figure 1 As shown, a high-bandwidth massive MIMO channel simulation device of the present invention includes several analog two-input and two-output channel basic units, and a single analog two-input and two-output channel basic unit includes a first analog-to-digital converter 1, a second Analog-to-digital converter 3, first transmit channel cascade input 2, second transmit channel cascade input 4, first receive channel cascade input 5, second receive channel cascade input 6, Gaussian white noise generator 7, external Timing and synchronization module 8; the output end of the first analog-to-digital converter 1 and the cascaded input 2 of the first transmission channel are connected to the first multiplexer 9, and the output end of the first multiplexer 9 is connected to the first multiplexer 9 A demultiplexer 10, the first demultiplexer 10 is respectively con...

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Abstract

The invention discloses a high-bandwidth large-scale MIMO channel simulation method and device. The device is composed of a plurality of two-input two-output channel simulation basic units. An input signal to be simulated can enter a channel fading simulator of the respective unit to carry out channel simulation and can be relayed to other units in a mode of cascade connection through a transmission channel so as to be simulated; and a simulated output signal can be converted to a simulated base band simulation signal through a digital-to-analog converter, and an intermediate result can be output in a mode of cascade connection through a reception channel so as to be combined by the next level of unit. In addition, the basic units provide synchronization for each path of data signal transmission through synchronization and timing modules so as to realize single-module and system-level data alignment. A method of combination of cascade connection of M*N two-input two-output channel simulation basic units can be adopted to construct large-scale MIMO channel simulation, an interconnection scheme is simple and flexible and is easy to realize, internal logics and interfaces are unified, and large-scale MIMO channel simulation is facilitated.

Description

technical field [0001] The invention relates to the field of wireless communication and testing, in particular to a high-bandwidth large-scale multi-input multi-output channel simulation method, which is applied to the field of wireless communication system testing. Background technique [0002] Wireless channels are complex and changeable signal physical channels, and there are unfavorable factors such as multipath fading, flat fading, and noise that affect communication performance, and these are issues that must be considered in communication system research. Channel simulation is to ensure the same Under the communication protocol and system system, it is an essential test process for smooth communication between terminals developed by different manufacturers and system equipment provided by multiple manufacturers. The channel simulator can also be used to control and change channel parameters, and then understand the performance of communication equipment or communicati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/391
Inventor 张念祖杨广琦翟建锋洪伟
Owner SOUTHEAST UNIV
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