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Computing method of packet error rate based on probability theory and packet collision model

A technology of collision model and calculation method, applied in the direction of digital transmission system, electrical components, transmission system, etc., can solve the problem that it is difficult to give the specific value of the packet error rate.

Active Publication Date: 2014-11-19
HARBIN INST OF TECH
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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that it is difficult to give the specific value of the packet error rate through the existing calculation method due to the uncertainty of the power reaching the receiver when the distance from the interfering node to the receiver is unknown or indefinite. A method for calculating the average packet error rate and the distribution function of the packet error rate established by combining probability theory and the existing packet collision model is provided. The specific method is carried out according to the following steps:

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  • Computing method of packet error rate based on probability theory and packet collision model
  • Computing method of packet error rate based on probability theory and packet collision model
  • Computing method of packet error rate based on probability theory and packet collision model

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specific Embodiment approach 1

[0023] Specific Embodiment 1: A method for calculating the packet error rate based on probability theory and packet collision model in this embodiment is specifically prepared according to the following steps:

[0024] Step 1. Determine the power P of the interference signal reaching the desired SUN receiver according to the distance distribution between the interfering WLAN transmitter and the desired SUN receiver r The probability distribution function of

[0025] Step 2. According to the power P of the interference signal arriving at the desired SUN receiver r The probability distribution function of To determine the probability distribution function of the SINR of the desired SUN receiver;

[0026] Step 3, determine the probability distribution function of the upper limit of the bit error rate according to the probability distribution function of the SINR of the expected SUN receiver;

[0027] Step 4, combining the packet collision model and the probability distribut...

specific Embodiment approach 2

[0029] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: the distance r between the interference source and the desired SUN receiver in the step 1 is a uniformly distributed random variable in the ring, then the probability distribution function F of r r (x) for

[0030] F r ( x ) = x - R min R max - R min ;

[0031] Combined with the transmitted power of the interference signal, according to the path loss model of signal transmission, the power P of the interference signal reaching the desired SUN receiver is obtained r Distribution:

[0032]If the transmitting power of the interference signal is P t...

specific Embodiment approach 3

[0036] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: the value of the path loss coefficient b is 4.

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Abstract

The invention relates to a computing method of a packet error rate based on a probability theory and a packet collision model. The computing method aims at solving the problems that when a distance between an interference node and a receiver is unknown or unvalued, the existing computing method is difficult to give a specific value of the packet error rate owing to uncertainty of a power, which reaches the receiver. The computing method comprises the following steps of step 1, determining a probability distribution function FPr(x) of a power Pr of an interference signal, which reaches an expected SUN receiver, according to distance distribution between an interference WLAN (Wireless Local Area Network) transmitter and the expected SUN receiver; step 2, determining a probability distribution function of a signal to noise ratio of the expected SUN receiver; step 3, determining a probability distribution function of an upper limit of the packet error rate; step 4, determining a probability distribution function of the packet error rate; and step 5, determining an average value of the packet error rate. The computing method is applied to the field of communication.

Description

technical field [0001] The invention relates to a calculation method of packet error rate based on probability theory and packet collision model. Background technique [0002] A smart grid is a complex and sophisticated system that combines power, control and communication technologies to monitor and optimize the entire power transmission service from the power generation station to the end user. One of the main features of the smart grid is that it can conduct real-time two-way transmission of electric energy and various data information, so as to balance the supply of electric energy and the needs of users. The ubiquitous communication network supporting power transmission is the basis for realizing the intelligence of the power grid. As far as the current development of communication technology is concerned, the application of wireless communication and network technology to make the power grid intelligent is an inevitable choice. In order to promote the application of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26
Inventor 陈晓华陈舒怡马若飞孟维晓
Owner HARBIN INST OF TECH
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