Practical environment testing platform for distributed multi-input and multi-output radio communication system

Abstract

The invention provides a true environment test platform for a distributed multi-input multi-output wireless communication system, which includes a client end, a sending end, and a receiving end. The three ends are connected with each other through cabled or wireless local area network; the client end is responsible for forming base band sampling data and sending the data to the sending end through the local area network, receiving sampling data from the receiving end through the local area network, and restoring the original signal through base band treatment; the sending end is responsible for receiving sample data from the client end, informing the receiving end, and sending radio frequency analog signal to wireless channels through antenna; the receiving end is responsible for receiving radio frequency analog signal from the sending end through antenna, and returning the base band sampling data to the client end through the local area network. In signal processing arithmetic study and true wireless channel environment test, the prevention can display the advantage of the tested technology more directly and convectively; signals are able to go through the complete communication process in the true wireless channel environment.

Description

technical field [0001] The invention relates to a distributed-based multiple-input multiple-output wireless communication system platform, belonging to the technical field of multiple-input multiple-output platform system realization. Background technique [0002] A traditional wireless communication system adopts a single input single output system (SISO, Single Input Single Output). This system is limited by Shannon's capacity, so no matter what channel coding or modulation method is used, it is difficult for the wireless channel to meet the requirements of high-speed transmission. [0003] Users' requirements for higher data rates make it urgent to increase the data rate. In recent years, space diversity is mainly used to improve the signal-to-noise ratio and increase the capacity of the system, and this method is to use a multi-element array antenna at the receiving end, and the transmitting antenna uses a cell (that is, a single-input multiple-output system (SIMO, Sing...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the problems caused by using only a simplified wireless channel simulation algorithm in the existing wireless communication system, and provides a real-environment test platform for a multiple-input multiple-output wireless communication system, which enables transmission and reception to undergo a complete slave constellation mapping , pulse shaping, modulation, to synchronization, demodulation, and judgment transmission process, and through the real wireless channel transmission, affected by the whole system, the recovered signal can more accurately test the performance of the MIMO system algorithm

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