Reverberant type channel simulator and signal simulation method

Abstract

The invention discloses a reverberant type channel simulator comprising an isolation shell and a stirring device arranged in the isolation shell; multiple signal transmitting terminals and multiple signal receiving terminals are also arranged in the isolation shell; a signal transmitted by the signal transmitting terminal is formed into an electromagnetic wave signal of a specific channel model via the stirring device, and received by a signal receiving terminal. The invention also provides a method for achieving channel simulation, comprising the following steps of S1, using a computer to perform analogue simulation on an initial channel, and setting the electromagnetic wave signal of each signal transmitting terminal according to an analogue simulation result of the initial channel; andS2, forming the electromagnetic wave signal of the specific channel model after reflecting and diffracting the electromagnetic wave signal transmitted by the signal transmitting terminal by using thereverberant type channel simulator. According to the simulator and the method provided by the invention, by using the mode of combining mechanical simulation with software simulation, the formed hybrid channel has hardly any signal loss and signal distortion, the channel simulation efficiency is enhanced, and the production cost is greatly saved.

Description

technical field [0001] The invention relates to the communication field, in particular to a channel simulation device and a channel simulation method. Background technique [0002] The wireless channel is an image metaphor for the signal path between the sending end and the receiving end in wireless communication. For radio waves, it is transmitted from the sending end to the receiving end without a tangible connection, and its propagation path also has There may be more than one. In order to vividly describe the work between the sending end and the receiving end, we can imagine that there is an invisible road connection between the two, and this connection path is called a channel. [0003] MIMO (Multiple-Input Multiple-Output) technology refers to the use of multiple transmitting antennas and receiving antennas at the transmitting end and receiving end, respectively, so that signals are transmitted and received through multiple antennas at the transmitting end and receivin...

AI Technical Summary

Problems solved by technology

[0005] However, in the traditional process of realizing channel simulation through a channel emulator (such as DSP or FPGA), the electromagnetic wave signal is converted into an electrical signal transmission, and the electrical signal is processed in the channel emulator through frequency conversion, delay processing, signal attenuation processing, signal interference, etc. In the process of superposition processing, signal noise superposition processing, etc., it is easy to cause signal distortion or loss of some important signals.

The existing technology is a channel emulator, which is limited by the lumped parameter element, the acceptable signal frequency range is limited, the signal attenuation adjustment and phase adjustment are limited, the signal processing is greatly affected by the parasitic parameters of the lumped element, and the signal loss is relatively large

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