Title :
Coding for a degraded memory under a partial modification of records
Author_Institution :
Dept. of Electr. Eng.-Syst., Tel-Aviv Univ., Israel
fDate :
3/1/1992 12:00:00 AM
Abstract :
The coding problem for the binary degraded memory (DM) or write-once-memory (WOM) under a partial modification of records is considered. For this memory, if ´1´ is recorded in any cell then the content of this cell cannot be changed during following recordings. Double recording into such a memory with specified constraints is considered. Upper and lower bounds for the capacity of the DM under this kind of recording are derived. The lower bound is derived only for the case where the size of input messages alphabet is going to infinity.<>
Keywords :
digital storage; encoding; binary degraded memory; coding; double recording; lower bounds; memory capacity; partial modification of records; upper bounds; write-once-memory; Absorption; Binary sequences; Decoding; Degradation; Delta modulation; Disk recording; Encoding; H infinity control; Hamming distance; Optical recording;
Journal_Title :
Information Theory, IEEE Transactions on
