Citation
Abstract
Pulse-position modulation (PPM) is considered to be an efficient modulation format for transmitting information over optical communication channels, requiring only the delay of a single optical pulse in each word to convey the desired information. In this aricle, the power spectral density (PSD) of a random pulse train generated by a sequence of PPM symbols is derived. Variations of laser intensity, pulse jitter, and "dead time" are taken into account in the model. Results show that the PSD of the generalized PPM signal is composed of both discrete and continuous components.
Keywords
power spectral density
optical communications
pulse-position modulation
Details
- Volume
- 42-133
- Published
- May 15, 1998
- Pages
- 1–5
- File Size
- 162.9 KB