Error vector Magnitude
Dear,
If i use Decision component from Demodulator/Receiver Library for DP-QPSK Rx after DSP.
and EVM is 6.34% ,How can i expect BER?
Responses (8):
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Dear,
If i use Decision component from Demodulator/Receiver Library for DP-QPSK Rx after DSP.
and EVM is 6.34% ,How can i expect BER? -
In another words what the values of EVM that is acceptable?
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There is not a simple relation between EVM and BER, because depending on the constellation diagram the EVM could have a larger or smaller impact. Closely packed constellation diagrams with the same EVM will likely have a worse BER.
Searching for papers, I came across this one that aims at relating the two quantities. From a quick glance I’d say less that 10% EVM is critical for a quality system.
http://www.ee.ucl.ac.uk/lcs/previous/LCS2000/lcs057.pdf
Regards
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Dear Damian I got a relationship between BER and EVM in one paper. Please find the attache image and pdf.
in the attached iamge Q() is the Gaussian co-error function and is given in the 2nd attached image.
and in the pdf page no 263.Thanks.
Regards
Attachments:
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Hello sir
We are using optisystem 13 version . We areworking on RoF how We can Measure EVM & ACPR -
I am also unable to calculate, only I got the theoretical concept and mathematical expression so please anyone help.
Regards
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Dear Ajay, In which paper you are you are working.
I am asking you me also working on the ROF full duplex communication.Regards
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I am sending you the attachment of “Decision” component but there isn’t any option of calculating EVM. I am using opti system version 14.
Attachments:
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(Awaiting moderation)
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