Adaptive companded pulse-code-modulation
Abstract
In this paper, a novel quantization scheme - Adaptive Companded Pulse Code Modulation (ACPCM) - is proposed. It is shown that, for fine quantization of analog signals, ACPCM will outperform the widely-used PCM and DPCM in the sense of minimizing the average mean squared quantizing error. For autoregressive (AR) signals, ACPCM is shown to reduce to DPCM, thus demonstrating a large rate optimality of DPCM for these kinds of signals. Some examples and simulations are given to demonstrate the theory.
- Publication:
-
IN: Annual Allerton Conference on Communication
- Pub Date:
- 1982
- Bibcode:
- 1982ccc..proc...60B
- Keywords:
-
- Adaptive Control;
- Analog Data;
- Companding;
- Pulse Code Modulation;
- Signal Encoding;
- Signal Measurement;
- Asymptotic Methods;
- Autoregressive Processes;
- Bit Error Rate;
- Computerized Simulation;
- Differential Pulse Code Modulation;
- Markov Processes;
- Optimal Control;
- Communications and Radar