High spectral efficiency SSB-PAM-DD scheme with high linewidth tolerance
For low-cost and high chromatic dispersion (CD) robustness single sideband (SSB) with direct detection (DD), three schemes of SSB with pulse amplitude modulation (PAM) were investigated.Among that, the highest spectral efficiency was achieved by the scheme of adding the frequency down-conversion at...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2022-05-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2022100/ |
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| _version_ | 1841540005075353600 |
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| author | Dongxu LU Xian ZHOU Fei LIU Jiahao HUO Jinhui YUAN Keping LONG |
| author_facet | Dongxu LU Xian ZHOU Fei LIU Jiahao HUO Jinhui YUAN Keping LONG |
| author_sort | Dongxu LU |
| collection | DOAJ |
| description | For low-cost and high chromatic dispersion (CD) robustness single sideband (SSB) with direct detection (DD), three schemes of SSB with pulse amplitude modulation (PAM) were investigated.Among that, the highest spectral efficiency was achieved by the scheme of adding the frequency down-conversion at the transmitter.However, that scheme reduces the tolerance for laser linewidth.Hence, based on the character of the SSB-PAM signal, a DSP scheme was proposed, including a modified equalization algorithm with phase distortion immunity and blind phase search algorithm.The simulation results show that the modified scheme can tolerate 1 MHz linewidth for 112 Gbit/s SSB-PAM-DD, while the original scheme for SSB-PAM was only 100 kHz at the same bit error rate (BER) threshold.Therefore, the proposed scheme can achieve a high frequency efficiency, high linewidth tolerance, and low-cost SSB-PAM signaling transmission. |
| format | Article |
| id | doaj-art-f8ec9fc884434df59ff36b09f503d23d |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2022-05-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-f8ec9fc884434df59ff36b09f503d23d2025-01-14T06:29:49ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2022-05-0143364459395360High spectral efficiency SSB-PAM-DD scheme with high linewidth toleranceDongxu LUXian ZHOUFei LIUJiahao HUOJinhui YUANKeping LONGFor low-cost and high chromatic dispersion (CD) robustness single sideband (SSB) with direct detection (DD), three schemes of SSB with pulse amplitude modulation (PAM) were investigated.Among that, the highest spectral efficiency was achieved by the scheme of adding the frequency down-conversion at the transmitter.However, that scheme reduces the tolerance for laser linewidth.Hence, based on the character of the SSB-PAM signal, a DSP scheme was proposed, including a modified equalization algorithm with phase distortion immunity and blind phase search algorithm.The simulation results show that the modified scheme can tolerate 1 MHz linewidth for 112 Gbit/s SSB-PAM-DD, while the original scheme for SSB-PAM was only 100 kHz at the same bit error rate (BER) threshold.Therefore, the proposed scheme can achieve a high frequency efficiency, high linewidth tolerance, and low-cost SSB-PAM signaling transmission.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2022100/single sidebandpulse amplitude modulationdirect detectionlaser linewidthsignal equalizationphase compensation |
| spellingShingle | Dongxu LU Xian ZHOU Fei LIU Jiahao HUO Jinhui YUAN Keping LONG High spectral efficiency SSB-PAM-DD scheme with high linewidth tolerance Tongxin xuebao single sideband pulse amplitude modulation direct detection laser linewidth signal equalization phase compensation |
| title | High spectral efficiency SSB-PAM-DD scheme with high linewidth tolerance |
| title_full | High spectral efficiency SSB-PAM-DD scheme with high linewidth tolerance |
| title_fullStr | High spectral efficiency SSB-PAM-DD scheme with high linewidth tolerance |
| title_full_unstemmed | High spectral efficiency SSB-PAM-DD scheme with high linewidth tolerance |
| title_short | High spectral efficiency SSB-PAM-DD scheme with high linewidth tolerance |
| title_sort | high spectral efficiency ssb pam dd scheme with high linewidth tolerance |
| topic | single sideband pulse amplitude modulation direct detection laser linewidth signal equalization phase compensation |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2022100/ |
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