Experimental demonstration of multi-aperture digital coherent combining over a 3.2-km free-space link
The next generation free-space optical communications infrastructure will need to support a wide variety of space-to-ground links. As a result of the limited size, weight, and power on space-borne assets, the ground terminals need to scale efficiently to large collection areas to support extremely l...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
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SPIE, the International Society of Optical Engineering
2018
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| Online Access: | http://hdl.handle.net/1721.1/116589 |
| _version_ | 1826213246128881664 |
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| author | Geisler, David J. Yarnall, Timothy M. Schieler, Curt M. Stevens, Mark L. Robinson, Bryan S Hamilton, Scott A |
| author2 | Lincoln Laboratory |
| author_facet | Lincoln Laboratory Geisler, David J. Yarnall, Timothy M. Schieler, Curt M. Stevens, Mark L. Robinson, Bryan S Hamilton, Scott A |
| author_sort | Geisler, David J. |
| collection | MIT |
| description | The next generation free-space optical communications infrastructure will need to support a wide variety of space-to-ground links. As a result of the limited size, weight, and power on space-borne assets, the ground terminals need to scale efficiently to large collection areas to support extremely long link distances or high data rates. Recent advances in integrated digital coherent receivers enable the coherent combining (i.e., full-field addition) of signals from several small apertures to synthesize an effective single large aperture. In this work, we experimentally demonstrate the coherent combining of signals received by four independent receive chains after propagation through a 3:2-km atmospheric channel. Measured results show the practicality of coherently combining the four received signals via digital signal processing after transmission through a turbulent atmosphere. In particular, near-lossless combining is demonstrated using the technique of maximal ratio combining. |
| first_indexed | 2024-09-23T15:45:47Z |
| format | Article |
| id | mit-1721.1/116589 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T15:45:47Z |
| publishDate | 2018 |
| publisher | SPIE, the International Society of Optical Engineering |
| record_format | dspace |
| spelling | mit-1721.1/1165892022-10-02T03:58:04Z Experimental demonstration of multi-aperture digital coherent combining over a 3.2-km free-space link Geisler, David J. Yarnall, Timothy M. Schieler, Curt M. Stevens, Mark L. Robinson, Bryan S Hamilton, Scott A Lincoln Laboratory Geisler, David J. Yarnall, Timothy M. Schieler, Curt M. Stevens, Mark L. Robinson, Bryan S Hamilton, Scott A The next generation free-space optical communications infrastructure will need to support a wide variety of space-to-ground links. As a result of the limited size, weight, and power on space-borne assets, the ground terminals need to scale efficiently to large collection areas to support extremely long link distances or high data rates. Recent advances in integrated digital coherent receivers enable the coherent combining (i.e., full-field addition) of signals from several small apertures to synthesize an effective single large aperture. In this work, we experimentally demonstrate the coherent combining of signals received by four independent receive chains after propagation through a 3:2-km atmospheric channel. Measured results show the practicality of coherently combining the four received signals via digital signal processing after transmission through a turbulent atmosphere. In particular, near-lossless combining is demonstrated using the technique of maximal ratio combining. 2018-06-26T12:24:36Z 2018-06-26T12:24:36Z 2017-02 2018-03-16T14:45:45Z Article http://purl.org/eprint/type/ConferencePaper 0277-786X http://hdl.handle.net/1721.1/116589 Geisler, D. J., T. M. Yarnall, C. M. Schieler, M. L. Stevens, B. S. Robinson, and S. A. Hamilton. “Experimental Demonstration of Multi-Aperture Digital Coherent Combining over a 3.2-Km Free-Space Link.” Edited by Hamid Hemmati and Don M. Boroson. Free-Space Laser Communication and Atmospheric Propagation XXIX (February 24, 2017). http://dx.doi.org/10.1117/12.2256581 Proceedings of SPIE--the Society of Photo-Optical Instrumentation Engineers Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf SPIE, the International Society of Optical Engineering SPIE |
| spellingShingle | Geisler, David J. Yarnall, Timothy M. Schieler, Curt M. Stevens, Mark L. Robinson, Bryan S Hamilton, Scott A Experimental demonstration of multi-aperture digital coherent combining over a 3.2-km free-space link |
| title | Experimental demonstration of multi-aperture digital coherent combining over a 3.2-km free-space link |
| title_full | Experimental demonstration of multi-aperture digital coherent combining over a 3.2-km free-space link |
| title_fullStr | Experimental demonstration of multi-aperture digital coherent combining over a 3.2-km free-space link |
| title_full_unstemmed | Experimental demonstration of multi-aperture digital coherent combining over a 3.2-km free-space link |
| title_short | Experimental demonstration of multi-aperture digital coherent combining over a 3.2-km free-space link |
| title_sort | experimental demonstration of multi aperture digital coherent combining over a 3 2 km free space link |
| url | http://hdl.handle.net/1721.1/116589 |
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