Relevance of using single-tone tests to characterize ADCs for ADSL modems

• The ADC in ADSL modems is chosen to meet a requirement of an effective number of bits. To find the effective number of bits of an ADC, a single-tone test is used. Since an ADSL application is very different from the single-tone, it is not certain that this is suitable method. A detailed ADC model has been included in a MATLAB model of an ADSL link and simulations have been made to investigate the relevance of single-tone characterization of ADCs for ADSL applications.

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