In polybinary signalling method the present bit of binary sequence is algebraically added with ______ number of previous bits.(a) j(b) 2j(c) j+2(d) j-2This question was addressed to me in quiz.This intriguing question originated from Correlative Coding in portion Formatting and Baseband Modulation of Digital Communications

In polybinary signalling method the present bit of binary sequence is

1.	In polybinary signalling method the present bit of binary sequence is algebraically added with ______ number of previous bits.(a) j(b) 2j(c) j+2(d) j-2This question was addressed to me in quiz.This intriguing question originated from Correlative Coding in portion Formatting and Baseband Modulation of Digital Communications
Answer» Right ANSWER is (d) j-2 To elaborate: In polybinary SIGNALLING method the present BINARY digit of the sequence is formed from the modulo-2 ADDITION of the j-2 preceding DIGITS of the sequence and the present digit.

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