Title :
Multilevel sequences and line codes
Author :
Botha, L. ; Ferreira, H.C. ; Broere, I.
Author_Institution :
Fac. of Eng., Rand Afrikaans Univ., Johannesburg, South Africa
Abstract :
Markov models and values of channel capacity are presented for multilevel sequences with the number of signal levels ranging from four to seven, subject to three classes of channel-input restrictions. Several new line codes suitable for use in digital communication systems are presented, together with their error propagation properties and power spectral densities. These codes satisfy restrictions regarding runlength and zero-frequency components.<>
Keywords :
Markov processes; channel capacity; codes; digital communication systems; Markov models; channel capacity; digital communication systems; error propagation properties; line codes; multilevel sequences; power spectral densities; runlength; signal levels; zero-frequency components;
Journal_Title :
Communications, Speech and Vision, IEE Proceedings I
