Abstract：Based on the relationship between matched filter and BER and EVM, using “traversal method”,an engineering approximation method is proposed to search the best measuring filter, which making the EVM measurement in better accuracy for cases of unawareness of filter configuration or specialized filter in equipment under testing. Experiments show that the method is practical and effective. When there is a matched filter in the measuring instrument, the probability of finding the matching filter is 100%. When there is no matching filter in the measuring instrument, the “traversal method” can find the best measurement filter under limited conditions.
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2020, Vol. 41 
