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An Asymptotically Compact Approximation Bit Error Rate Performance Analysis Method

An analysis method and bit error rate technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve the problems of bit error rate performance without quantitative analysis and theoretical basis, and without forwarding power

Active Publication Date: 2022-04-08
ANHUI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The intelligent reflector-assisted communication system is considered to be a single-slot amplification-forwarding multi-relay system without forwarding power, but there is no quantitative analysis and theoretical basis for the performance comparison of the bit error rate between the two

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  • An Asymptotically Compact Approximation Bit Error Rate Performance Analysis Method
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  • An Asymptotically Compact Approximation Bit Error Rate Performance Analysis Method

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Embodiment 1

[0033] see figure 1 , this embodiment introduces an asymptotically compact approach bit error rate performance analysis method, which compares and analyzes the bit error rate performance of the intelligent reflector-assisted communication system and the single-slot amplifying and forwarding multi-relay system. The analytical method comprises the steps of:

[0034] Step S1, constructing a model of the intelligent reflector-assisted communication system, and calculating the signal-to-noise ratio γ output by the maximum ratio combiner.

[0035] Wherein, the intelligent reflective surface auxiliary communication system model is composed of a source node, a destination node, and an intelligent reflective surface with N reflective units. The deterministic channel from the source node to the destination node is h s,d , the deterministic channel from the source node to the smart reflector is h s,r , the deterministic path from the smart reflector to the destination node is h r,d ,...

Embodiment 2

[0051] This embodiment introduces the relationship between the theoretical value and the simulation value of the asymptotically compact bit error rate (SER) of the system with direct link and the system without direct link in the intelligent reflective surface assisted communication system. see figure 2 , the Monte Carlo method is used, the maximum likelihood method is used at the destination node to detect the output signal of the maximum ratio combiner, and the system simulation adopts the QPSK modulation mode, that is, M=4, SNR=P / N 0 , and assuming N 0 =1, wherein, N=32,

[0052] Depend on figure 2 It can be seen that when the signal-to-noise ratio SNR is greater than 10dB, that is, under the condition of a low bit error rate, there is a good fitting effect between the theoretical value and the simulated value, thus proving that the derived asymptotically tight approximation bit error rate SER validity of the formula. As the signal-to-noise ratio increases, the bit ...

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Abstract

The invention discloses an asymptotically tight approximation bit error rate performance analysis method. The analysis method includes the steps: step S1, constructing an intelligent reflection surface auxiliary communication system model, and calculating the signal-to-noise ratio γ output by the maximum ratio combiner; step S2, analyzing the bit error rate of the intelligent reflective surface auxiliary communication system, converting γ into γ=γ 1 +γ 2 In the form of , respectively construct γ 1 and gamma 2 Generating function of moments; step S3, according to γ 1 and gamma 2 The sum of the moment generating functions of and obtains an asymptotically tight approximation to the bit error rate. The present invention makes the signal-to-noise ratio on the forwarding link of the intelligent reflection surface meet the harmonic mean form through the reasonable construction of the reflection coefficient and the intelligent reflection surface link coefficient, deduces a system asymptotically compact approximation formula with a simple structure, and utilizes The control variable method is used to analyze the performance of the intelligent reflector-assisted communication system, so as to compare and analyze the bit error rate performance of the intelligent reflector-assisted communication system and the single-slot amplifying and forwarding multi-relay system.

Description

technical field [0001] The invention relates to the field of intelligent reflective surface assisted communication, in particular to an asymptotically tight approximation bit error rate performance analysis method of an intelligent reflective surface assisted communication system. Background technique [0002] In future wireless communication systems, smart reflector technology provides a potential way to solve the problems of larger bandwidth, higher spectral efficiency and smarter transmission technology. Smart reflector technology is a plane composed of a large number of low-cost passive reflective elements, and each element can be controlled by software to adjust the amplitude and phase of the incident signal. Smart reflector technology has many advantages, such as strong scalability, low implementation cost, wide operating frequency band, and the ability to configure wireless propagation environments. [0003] The intelligent reflector-assisted communication system is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/309H04B17/336H04B17/391H04W24/06
CPCH04B17/309H04B17/336H04B17/391H04W24/06
Inventor 徐磊王兆瑞常静方红雨李晓辉
Owner ANHUI UNIVERSITY