Title :
Sequences and codes with asymmetrical runlength constraints
Author :
Menyennett, C. ; Ferreira, H.C.
Author_Institution :
Lab. for Cybern., Rand Afrikaans Univ., Aucklandpark, South Africa
fDate :
5/1/1995 12:00:00 AM
Abstract :
Presents a generating function for runlength limited sequences intended for binary asymmetrical channels. The channel capacity for such channels is derived from this generating function. The authors furthermore present selected numerical values of channel capacity for these sequences. An expression for the power spectrum of binary maxentropic asymmetrical sequences is given and the influence of the asymmetry on the spectrum is investigated, Two new runlength limited modulation codes which are suitable for use on binary asymmetrical channels are investigated
Keywords :
channel capacity; modulation coding; runlength codes; sequences; spectral analysis; asymmetrical runlength constraints; binary asymmetrical channels; binary maxentropic asymmetrical sequences; channel capacity; generating function; numerical values; power spectrum; runlength limited modulation codes; runlength limited sequences; Channel capacity; Disk recording; Fiber lasers; Modulation coding; Optical modulation; Optical pulse generation; Optical recording; Pulse modulation; Semiconductivity; Semiconductor lasers;
Journal_Title :
Communications, IEEE Transactions on
