New multilevel line codes for baseband communication-an experimental study

Codes considered for the North American ISDN and similar new multilevel line codes that comply with strict transmission channel input restrictions are discussed briefly. A short description of the experimental set up, used to evaluate the new multilevel line codes, is given. Measured eye patterns and spectra of some multilevel line codes are presented and compared with the line code 2B1Q, which was proposed for North American applications.<
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