Mountis, Michael G. (1978). Pulse Time-Code Modulation System. PHD thesis, Aston University.
Abstract
In conventional systems of pulse-code modulation (PCM), the signal is sampled at a constant frequency, and pulse groups representing the signal amplitude are transmitted. The sampling frequency has to be related to the highest frequency in the signal; consequently, the sampling frequency is higher than is necessary during those times when the signal contains low frequencies resulting in the under-utilization of the transmission bandwidth. A new system has been developed, "PULSE TIME-CODE MODULATION" (PTCM) in which the sampling frequency is varied to suit the requirements of the signal. As a result, the number of samples to be transmitted over a period is reduced and a narrower bandwidth can be used. In the system investigated, a time delay of the signal is inevitably introduced and this may be a disadvantage in some applications.
| Publication DOI: | https://doi.org/10.48780/publications.aston.ac.uk.00008200 |
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| Divisions: | College of Engineering & Physical Sciences |
| Additional Information: | Copyright ©Mountis, M. G., 1978. Mountis, M. G. asserts their moral right to be identified as the author of this thesis. This copy of the thesis has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with its author and that no quotation from the thesis and no information derived from it may be published without appropriate permission or acknowledgement. If you have discovered material in Aston Publications Explorer which is unlawful e.g. breaches copyright, (either yours or that of a third party) or any other law, including but not limited to those relating to patent, trademark, confidentiality, data protection, obscenity, defamation, libel, then please read our Takedown Policy and contact the service immediately. |
| Institution: | Aston University |
| Uncontrolled Keywords: | pulse time-code modulation system |
| Last Modified: | 22 Jan 2025 09:55 |
| Date Deposited: | 12 May 2010 13:02 |
| Completed Date: | 1978 |
| Authors: |
Mountis, Michael G.
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