Abstract
In this letter, we analyze the performance improvement of on-off-keying free-space optical communication systems in atmospheric turbulence conditions due to coherent detection and the dynamic decision threshold (DDT) scheme. Our analytical results show that the DDT scheme provides a 5.7-dB power reduction for achieving a bit error rate of 10-3compared with the conventional fixed decision threshold scheme. In addition, the improvement achieved by the DDT scheme is related to the strength of amplitude and phase fluctuations, not to the power of the local oscillator.
Original language | English |
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Article number | 6301682 |
Pages (from-to) | 2035-2037 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 24 |
Issue number | 22 |
DOIs | |
Publication status | Published - 26 Nov 2012 |
Externally published | Yes |
Keywords
- Atmospheric turbulence
- coherent detection
- dynamic decision threshold
- free-space optical (FSO)
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering