Theoretical and Experimental Error Rates of PCM Codes

Abstract

As PCM increases In -use as a method of transmitting data, it is of greater importance to know exactly the probability with which each bit may be received accurately. While most engineers in the field are aware of the basic probability curve for PCM signals, very few are aware of what to expect under the many varied conditions of noise bandwidth, data bandwidth, code type, method of data regeneration and DC offset. These effects are clearly handled in this discussion. The effect of phase jitter, always present in any data regenerating device, is ignored in this presentation, and will ultimately add another element of degradation, particularly at the higher noise levels.