Performance Limitations of a Practical PCM Terminal
01 January 1962
The limitations of frequency-division systems have been discussed in the literature. This paper treats the limitations of a practical P C M terminal which make its performance different from more conventional systems. The areas to be discussed include (1) signal deterioration due to noise and distortion, (2) idle circuit noise and interchannel crosstalk, (3) net loss and (4) load capacity. Analytical discussions are presented and compared with experimental results on models assembled at Bell Telephone Laboratories.