Accession Number:

AD0754319

Title:

Analysis, Optimization, and Sensitivity Study of Differential PCM Systems Operating on Noisy Communication Channels,

Descriptive Note:

Corporate Author:

BRITISH COLUMBIA UNIV VANCOUVER DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

• Chand,Ke-Yen
• Donaldson,Robert W.

Report Date:

1972-02-18

Pagination or Media Count:

13.0

Abstract:

A closed-form analytical expression is obtained for the output signal-to-noise ratio SNR. of differential PCM systems operating on noisy digital channels. A procedure is then proposed for maximizing SNR, by joint optimization of the quantizer, predictor, and sampling rate. Several examples are considered, including one- and two-sample feedback systems excited by speech and video Gaussian signals. The predictor used in the DPCM system is linear and time invariant, but otherwise arbitrary. Author

Descriptors:

• *INFORMATION THEORY
• PULSE CODE MODULATION
• SAMPLING
• SIGNAL TO NOISE RATIO
• DIGITAL SYSTEMS
• DECODING
• SPEECH RECOGNITION
• VIDEO SIGNALS
• FEEDBACK
• CANADA

Subject Categories:

• Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE