Relation between Signal to Noise ratio and Logical Interference

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The discussion focuses on modifying the equation for Signal to Noise Ratio (SNR) to account for logical interference. It highlights the need to understand the relationship between SNR/SINR and both logical and physical interference, which can vary based on the system in use. The conversation suggests considering interference from other cells or base stations, as well as the receiver's internal thermal noise. Different forms of the ratio, such as E_c/I_0 and its variations, are mentioned as relevant to the context. Understanding these relationships is crucial for accurately adapting the equation for logical interference.
md.kamal1262
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Hi there, I want to modify a equation which is written for Singal to Noise Ratio. Now I want to change for logical interference. But I could not find any reliable source of explanation, " what is the relation between SNR/SINR and interference(Logical/Physical)?"
 
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Hello md.kamal1262,

Welcome to Physics Forums!
md.kamal1262 said:
Hi there, I want to modify a equation which is written for Singal to Noise Ratio. Now I want to change for logical interference. But I could not find any reliable source of explanation, " what is the relation between SNR/SINR and interference(Logical/Physical)?"

It kind of depends on what type of system you're working with.

Here is a place to start.

http://www.telecomhall.com/what-is-ecio-and-ebno.aspx

That gives you an explanation of E_c/I_0. But after that you want to consider whether the interference from other cells/base stations/NodeB/access points are also being considered as "interference." Then, you'll still need to consider whether the receiver's internal thermal noise is considered too. They all take different forms of "E_c/I_0" such as E_c/I_{0r}, E_c/\hat I_{0r}. Of course, even that notation depends on the standard/technology in question.
 
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