| Presentation | 2011-11-18 Evaluation of Maximal-Ratio-Combining Algorithm for Single-Polarization QPSK format with Elliptic Polarization Kazuomi ENDO, Youichi HASHIMOTO, TAKAMICHI Toru /, Kiyoshi FUKUCHI, Morio TOYOSHIMA, Yoshihisa TAKAYAMA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Single Polarization high-speed optical transmission is important for bidirectional free-space optical communication system in order to have enough isolation up-link and down-link because signal discrimination is possible by using orthogonal polarization states. Recent advance in digital coherent technology employing multi-level QPSK format is enabling such high-speed transmission with high receiver sensitivity. Polarization re-combining using polarization diversity receiver is widely used to do polarization aligning between signal and local, because the signal polarization state in the fiber in the receiver easily change by system vibration or shocks. However, in order to re-combine each polarization signals by digital signal processing, there is a possibility of system instability depending on the algorithm especially when signal polarization becomes 45-degree-azimuth elliptic one. In this paper, we propose a new algorithm of maximal ratio-combining. By adding split-ratio dependent phase correction coefficient, system showed stable re-combining against all input polarization states. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Single-Polarization / Free-Space Optical Communication / Digital Coherent Receiver / Maximal-Ratio-Combining |
| Paper # | OCS2011-101 |
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| Committee | OCS |
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| Conference Date | 2011/11/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Optical Communication Systems (OCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of Maximal-Ratio-Combining Algorithm for Single-Polarization QPSK format with Elliptic Polarization |
| Sub Title (in English) | |
| Keyword(1) | Single-Polarization |
| Keyword(2) | Free-Space Optical Communication |
| Keyword(3) | Digital Coherent Receiver |
| Keyword(4) | Maximal-Ratio-Combining |
| 1st Author's Name | Kazuomi ENDO |
| 1st Author's Affiliation | System Platforms Research Laboratories, NEC Corporation() |
| 2nd Author's Name | Youichi HASHIMOTO |
| 2nd Author's Affiliation | System Platforms Research Laboratories, NEC Corporation |
| 3rd Author's Name | TAKAMICHI Toru / |
| 3rd Author's Affiliation | / System Platforms Research Laboratories, NEC Corporation |
| 4th Author's Name | Kiyoshi FUKUCHI |
| 4th Author's Affiliation | System Platforms Research Laboratories, NEC Corporation |
| 5th Author's Name | Morio TOYOSHIMA |
| 5th Author's Affiliation | Space Communication Systems Laboratory, National Institute of Information and Communications Technology |
| 6th Author's Name | Yoshihisa TAKAYAMA |
| 6th Author's Affiliation | Space Communication Systems Laboratory, National Institute of Information and Communications Technology |
| Date | 2011-11-18 |
| Paper # | OCS2011-101 |
| Volume (vol) | vol.111 |
| Number (no) | 297 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |