Channel capacity and bit error rate analysis method of mobile multi-user molecular communication system based on drift diffusion

A technology of bit error rate and channel capacity, which is applied in the direction of baseband system, baseband system components, transmission system, etc.

Inactive Publication Date: 2020-02-18
ZHEJIANG UNIV OF TECH
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Problems solved by technology

Therefore, in a mobile molecular communication system, the mobility of nanomachines causes the distance between nanomachines to change with time, and the channel impulse response of the diffusion channel also changes with distance and time. bring great challenges

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  • Channel capacity and bit error rate analysis method of mobile multi-user molecular communication system based on drift diffusion
  • Channel capacity and bit error rate analysis method of mobile multi-user molecular communication system based on drift diffusion
  • Channel capacity and bit error rate analysis method of mobile multi-user molecular communication system based on drift diffusion

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Embodiment Construction

[0082] The present invention will be further described below in conjunction with the accompanying drawings.

[0083] refer to Figure 1 to Figure 9 , a channel capacity and bit error rate analysis method for a system model of a mobile multi-user molecular communication system based on drift diffusion, comprising the following steps:

[0084] The first step is to use the normal distribution to approximate the binomial distribution to obtain the number of molecules received by the RN in the current time slot, and obtain the mathematical expressions of the number of ISI and MUI molecules;

[0085] When N TNs share a one-dimensional diffuse channel, assume that TN i The position of (1≤i≤N) and RN is fixed, the distance between them does not change with time, and the collision effect between molecules is not considered, and the molecule obeys Brownian motion and has a positive drift velocity V, then describe any molecule from TN i The probability density function f(t) of arrival a...

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Abstract

A channel capacity and bit error rate analysis method of a mobile multi-user molecular communication system based on drift diffusion comprises the following steps: step 1, obtaining the number of molecules received by a current time slot RN by utilizing normal distribution to approach binomial distribution, and obtaining mathematical expressions of ISI and MUI molecular numbers; 2, establishing ahypothesis detection channel model of the mobile molecular communication system based on drift diffusion; and 3, obtaining a mathematical expression of the optimal decision threshold eta by adopting aminimum error criterion, and obtaining a calculation method of the channel capacity and the bit error rate. The invention provides a guidance direction for the design of a drift diffusion-based mobile multi-user molecular communication system with higher mutual information and lower bit error rate.

Description

technical field [0001] The invention relates to biotechnology, nanotechnology and communication technology, and is a method for analyzing channel capacity and bit error rate of a mobile multi-user molecular communication system based on drift and diffusion. Background technique [0002] In mobile molecular communication, nanomachines are in a moving state, which is more common in many practical applications (such as drug delivery in the human body, health monitoring, target detection, etc.). Therefore, mobile molecular communication is the most important and practical way of molecular communication in nano-networks. Different from the molecular communication system of static diffusion, in the mobile molecular communication model based on drift diffusion, the transmitter nanomachine TN (Transmitter Nanomachine) and the receiver nanomachine RN (Receiver Nanomachine) respectively represent the sender and receiver in the model , and both TN and RN are in a moving state, and the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/309H04B17/391H04L25/03
CPCH04L25/03006H04B17/309H04B17/391
Inventor 程珍涂宇淳李燕君池凯凯夏明
Owner ZHEJIANG UNIV OF TECH
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