Effects of atmospheric turbulence on an optical communication system using a receiver with memory
Abstract
Atmospheric turbulence causes random fading in any open-air optical communication channel. When the transmitted message is in the form of a block code, a binary-union decoding system consisting of one storage register can be used to enhance the reliability of this type of fading channel. To illustrate the effectiveness of the binary-union decoder, the probabilities of detecting one word out of (N + 1) received words for both a binary-union decoder and a simple word-recognition decoder system are compared. Finally, the binary-union decoder is analyzed for three different fading conditions of the channel corresponding to conditions of atmospheric turbulence typical of weak, moderate, and superstrong scattering. It is shown that the worst channel conditions for an optical communication system exist when the turbulence is moderate.
- Publication:
-
Applied Optics
- Pub Date:
- December 1983
- DOI:
- 10.1364/AO.22.003833
- Bibcode:
- 1983ApOpt..22.3833P
- Keywords:
-
- Atmospheric Turbulence;
- Channels (Data Transmission);
- Optical Communication;
- Signal Fading;
- Transmission Efficiency;
- Turbulence Effects;
- Binary Codes;
- Bit Error Rate;
- Data Storage;
- Decoding;
- Probability Theory;
- Reliability Analysis;
- Signal Reception;
- Statistical Analysis;
- Communications and Radar;
- TURBULENCE;
- OPTICAL COMMUNICATIONS