Abstract
We develop an adaptive power control algorithm to facilitate satellite to ground laser communication through turbulence fading channels. Adaptive control is a powerful tool that improves energetic gain of the satellite laser. We use discrete laser transmitter intensity levels in our control algorithm. A novel recursive technique defines optimal laser transmitting intensity levels so that the laser-transmitted power is adapted according to instant changes of the signal-to-noise ratio caused by channel fading. The algorithm's performance is first investigated in a general form suitable for any channel fading statistics. Then it is specified for a typical lognormal fading channel. The results indicate an improvement of up to 10 dB in energetic gain.
| Original language | English |
|---|---|
| Pages (from-to) | 349-362 |
| Number of pages | 14 |
| Journal | International Journal of Satellite Communications and Networking |
| Volume | 25 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1 Jul 2007 |
Keywords
- Adaptive control
- Free-space laser communication
- Power efficiency
- Satellite-ground link
ASJC Scopus subject areas
- Media Technology
- Electrical and Electronic Engineering
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