Abstract
High-order pulse modulations in free space optics (FSO) communication are of practical value, and non-Kolmogorov gamma–gamma (GG) channel model is the most suitable for FSO channel. However, research on a system combined with the above is rarely reported. In our work, we propose high-order (4*32 and 4*64) amplitude and pulse position modulation (APPM) and overlapping amplitude and pulse position modulation (AOPPM) FSO communication system under a modified non-Kolmogorov GG turbulent channel model. Simulation results present that AOPPM is obviously better than APPM in bit-error-rate (BER) performance, and BER performance grows with the increase of modulation order (number of pulse positions). The proposed schemes may provide a reference for system design and practical application.
Original language | English |
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Pages (from-to) | 1141-1146 |
Number of pages | 6 |
Journal | Microwave and Optical Technology Letters |
Volume | 63 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 2021 |
Externally published | Yes |
Keywords
- amplitude and pulse position modulation
- high order
- non-Kolmogorov gamma–gamma channel