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Dual-Pulse Pulse Position Modulation (Dppm) for Deep-Space Optical Communications Performance and Practicality Analysis
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Due to its simplicity and robustness against wavefront distortion, pulse position modulation (PPM) with photon counting detector has been seriously considered for long-haul optical wireless systems. This paper evaluates the dual-pulse case and compares it with the conventional single-pulse case. Analytical expressions for symbol error rate and bit error rate are first derived and numerically evaluated, for the strong, negative-exponential turbulent atmosphere; and bandwidth efficiency and throughput are subsequently assessed. It is shown that, under a set of practical constraints including pulse width and pulse repetition frequency (PRF), dual-pulse PPM enables a better channel utilization and hence a higher throughput than it single-pulse counterpart. This result is new and different from the previous idealistic studies that showed multi-pulse PPM provided no essential information-theoretic gains than single-pulse PPM. Li, Jing and Hylton, Alan and Budinger, James and Nappier, Jennifer and Downey, Joseph and Raible, Daniel Glenn Research Center NASA/TM-2012-216042, E-18436, GRC-E-DAA-TN5695
Publisher Name | Independently Published |
---|---|
Author Name | Hagendorf, Col |
Format | Audio |
Bisac Subject Major | SCI |
Language | NG |
Isbn 10 | 1794390693 |
Isbn 13 | 9781794390690 |
Target Age Group | min:NA, max:NA |
Dimensions | 01.10" H x 00.08" L x 50.00" W |
Page Count | 30 |
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