Rayleigh channel evaluation method

A channel and Rayleigh technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve the problems of inaccurate and unscientific judgment results, and achieve accurate and reliable judgment results

Active Publication Date: 2018-07-13
HEFEI UNIV OF TECH
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Problems solved by technology

In general, it is intuitively judged whether a channel fading sequence obeys the Rayleigh distribution by drawing the envelope probability density distribution diagram, phase angle distribution diagram and Doppler power spectrum. The results are not accurate enough to be convincing

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] refer to figure 1 , the present embodiment Rayleigh channel evaluation method, the hardware system that adopts, comprises host computer U1 and channel emulator U2; cable wire2.

[0039] The upper computer U1 configures the initial parameters required by the Rayleigh channel. The initial parameters include the maximum Doppler frequency, sampling frequency, fading delay, and the length of the required fading sequence. Line 1 is transmitted to the channel simulator U2; the channel simulator U2 receives the first data packet transmitted from the upper computer U1, and then generates the corresponding Rayleigh channel fading sequence, and packs the Rayleigh channel fading sequence into the second data packet, through The second cable 2 is transmitted to the host computer U1; the host computer U1 receives the second data packet fro...

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Abstract

A Rayleigh channel evaluation method includes the following steps: (1) an upper computer configures initial parameters required for a Rayleigh channel, packages the initial parameters into a first data packet, and transmits the first data packet to a channel simulator; (2) the channel simulator receives the first data packet transmitted from the upper computer, and then generates a corresponding Rayleigh channel fading sequence, packages the Rayleigh channel fading sequence into a second data packet, and transmits the second data packet to the upper computer; and (3) the upper computer receives the second data packet from the channel simulator, obtains fading sequence data, and then performs data analysis. According to the method disclosed by the invention, whether a fading channel is theRayleigh channel can be scientifically and effectively evaluated.

Description

technical field [0001] The invention relates to the field of wireless channels, in particular to a Rayleigh channel evaluation method. Background technique [0002] The classical Rayleigh channel model describes the state of the mobile wireless communication channel in the urban environment without a direct path, and is the most basic channel model of the wireless channel. The probability density of the envelope of the channel model obeys the Rayleigh distribution, the phase angle obeys the uniform distribution, and the Doppler power spectrum is a classic Jakes spectrum (U-shaped spectrum). In general, it is intuitively judged whether a channel fading sequence obeys the Rayleigh distribution by drawing the envelope probability density distribution diagram, phase angle distribution diagram and Doppler power spectrum. The results are not accurate enough to be convincing. Contents of the invention [0003] The technical problem to be solved by the present invention is to ov...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391H04B17/00
CPCH04B17/0087H04B17/3911
Inventor 何怡刚吴裕庭黄源隋永波程彤彤毕然佐磊
Owner HEFEI UNIV OF TECH
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