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Linear Time Erasure Codes With Nearly Optimal Recovery (Extended Abstract)

Summary: Linear Time Erasure Codes With Nearly Optimal Recovery
(Extended Abstract)
Noga Alon
Jeff Edmonds
Michael Luby
An (n, c, , r)-erasure code consists of an encoding
algorithm and a decoding algorithm with the following
properties. The encoding algorithm produces a set of
-bit packets of total length cn from an n-bit message.
The decoding algorithm is able to recover the message
from any set of packets whose total length is r, i.e.,
from any set of r/ packets. We describe erasure codes
where both the encoding and decoding algorithms run
in linear time and where r is only slightly larger than
1 Introduction
Most existing and proposed networks are packet
based, where a packet is fixed length indivisible unit of
information that either arrives intact upon transmis-


Source: Alon, Noga - School of Mathematical Sciences, Tel Aviv University


Collections: Mathematics