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Verification system for Rayleigh arched fading channel

A fading channel and verification system technology, which is applied in the field of wireless channel modeling and simulation, can solve the problem that the Rayleigh arch fading channel cannot be accurately analyzed and verified, and achieve accurate verification results

Active Publication Date: 2018-07-03
HEFEI UNIV OF TECH
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a verification system for Rayleigh arch fading channels to solve the problem that the existing Rayleigh arch fading channels cannot be accurately analyzed and verified

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  • Verification system for Rayleigh arched fading channel
  • Verification system for Rayleigh arched fading channel
  • Verification system for Rayleigh arched fading channel

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Embodiment Construction

[0050] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0051] refer to figure 1 A verification system for a Rayleigh arch fading channel includes a base station RRU U1, a radio frequency input unit U2, a Rayleigh arch fading channel simulation unit U3 and a terminal U4; the base station RRU U1 is connected to the radio frequency input unit U2 through a radio frequency interface; The input unit U2 is connected to the Rayleigh arch fading channel emulation unit U3 through the first radio frequency cable, the radio frequency input unit U2 is connected to the terminal U4 through the second radio frequency cable, and the Rayleigh arch fading channel emulation unit U3 is connected to the Rayleigh arch fading channel emulation unit through the third radio frequency cable. Terminal U4 is connected.

[0052] The radio frequency input unit U2 and the Rayleigh arch fading channel emulation unit U3 together ...

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Abstract

A verification system for a Rayleigh arched fading channel comprises a base station RRU, an RF input unit, a Rayleigh arched fading channel simulation unit, and a terminal. The terminal is used to verify a Rayleigh arched fading channel: calculate a sequence of the Rayleigh arched fading channel simulation model; verify first-order statistical properties of the simulation model; and verify a powerspectrum of the simulation model. The Rayleigh arched fading channel simulation model is generated by the simulation unit, and the terminal calculates the fading channel sequence based on a basebandinput signal and a baseband output signal; a maximum likelihood estimation method is used to analyze the amplitude and phase angle of the fading channel sequence to verify the first-order statisticalproperties of the simulation model; and the power spectrum of the simulation model is verified by observing the shape and bandwidth of a power spectrum density function. With the invention, the maximum likelihood estimation method is used to accurately and quantitatively analyze the first-order properties of the Rayleigh arched fading channel, namely the amplitude and phase angle.

Description

technical field [0001] The invention relates to the field of wireless channel modeling and simulation, and more specifically relates to a verification system for a Rayleigh arch fading channel. Background technique [0002] The Rayleigh classical fading channel model can characterize the Doppler effect and multipath effect in the small-scale fading of wireless channels, and is suitable for describing wireless channels in urban centers with dense buildings. The amplitude of the Rayleigh classical fading channel model obeys the Rayleigh distribution, the phase angle obeys the uniform distribution, and the Doppler power spectrum is a typical U-shaped spectrum. In a wireless channel with fixed transmitter and receiver positions, due to very small Doppler spread due to the movement of the environment, the power in the Doppler power spectrum is concentrated in the center of the frequency range, so that the typical U-shaped spectrum becomes into a circular arch. As a situation th...

Claims

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Application Information

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IPC IPC(8): H04B17/391H04B17/00
CPCH04B17/0087H04B17/3911H04B17/3912
Inventor 何怡刚方坤程彤彤吴裕庭黄源隋永波袁莉芬
Owner HEFEI UNIV OF TECH
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