Accession Number:

ADA045938

Title:

Joint Source and Channel Coding,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE ELECTRONIC SYSTEMS LAB

Personal Author(s):

• Massey,James L.

Report Date:

1977-09-01

Pagination or Media Count:

17.0

Abstract:

The advantages and disadvantages of combining the functions of source coding data compression and channel coding error correction into a single coding unit are considered. Particular attention is given to linear encoders, both for sources and for channels, because their ease of implementation makes their use desirable in practice. It is shown that, without loss of optimality, a joint sourcechannel linear encoder may be used when the goal is the distortionless reproduction of the source at the destination. On the other hand, it is shown that in general there is an inherent and significant loss of optimality if a joint sourcechannel linear encoder is used when the goal is relaxed to reproduction of the source within some specified non-negligible distortion. Author

Descriptors:

• *DATA COMPRESSION
• *ERROR CORRECTION CODES
• LINEAR SYSTEMS
• DIGITAL SYSTEMS
• NOISE
• INFORMATION THEORY
• DISTORTION
• REDUNDANCY
• DECODING
• BINARY NOTATION
• FACSIMILE COMMUNICATIONS

Subject Categories:

• Cybernetics
• Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE