Optical SEFDM System; Bandwidth Saving Using Non-Orthogonal Sub-Carriers
We propose and demonstrate a new optical spectrally efficient frequency division multiplexing (O-SEFDM) system, where non-orthogonal and overlapping sub-carriers are employed to provide higher spectral efficiency relative to optical-orthogonal frequency division multiplexing (O-OFDM). The O-SEFDM te...
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| Veröffentlicht in: | IEEE photonics technology letters 2014-02, Vol.26 (4), p.352-355 |
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| creator | Darwazeh, Izzat Tongyang Xu Tao Gui Yuan Bao Zhaohui Li |
| description | We propose and demonstrate a new optical spectrally efficient frequency division multiplexing (O-SEFDM) system, where non-orthogonal and overlapping sub-carriers are employed to provide higher spectral efficiency relative to optical-orthogonal frequency division multiplexing (O-OFDM). The O-SEFDM technique can increase spectral efficiency in both the electrical and optical domains. It is experimentally shown that for bandwidth saving up to 25%, we can achieve the same performance as O-OFDM. This is the first experimental verification of 25% optical faster than the Nyquist rate. Furthermore, for approximately the same spectral efficiency, 4QAM O-SEFDM outperforms standard 8QAM by 1.6 dB. It is experimentally shown that a lower-order modulation format can achieve a better performance by replacing a higher one. |
| doi_str_mv | 10.1109/LPT.2013.2293874 |
| format | Article |
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The O-SEFDM technique can increase spectral efficiency in both the electrical and optical domains. It is experimentally shown that for bandwidth saving up to 25%, we can achieve the same performance as O-OFDM. This is the first experimental verification of 25% optical faster than the Nyquist rate. Furthermore, for approximately the same spectral efficiency, 4QAM O-SEFDM outperforms standard 8QAM by 1.6 dB. 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The O-SEFDM technique can increase spectral efficiency in both the electrical and optical domains. It is experimentally shown that for bandwidth saving up to 25%, we can achieve the same performance as O-OFDM. This is the first experimental verification of 25% optical faster than the Nyquist rate. Furthermore, for approximately the same spectral efficiency, 4QAM O-SEFDM outperforms standard 8QAM by 1.6 dB. It is experimentally shown that a lower-order modulation format can achieve a better performance by replacing a higher one.</description><subject>Adaptive optics</subject><subject>Bandwidth</subject><subject>direct detection</subject><subject>fixed sphere decoder</subject><subject>iterative detection</subject><subject>OFDM</subject><subject>Optical distortion</subject><subject>Optical fiber communication</subject><subject>Optical modulation</subject><subject>Optical receivers</subject><subject>Optical transmitters</subject><subject>SEFDM</subject><subject>spectral efficiency</subject><issn>1041-1135</issn><issn>1941-0174</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kM1PAjEUxBujiYjeTbxs4nnx9WvbxpMiiAmKCXBuutsuLMFdbBcN_73dQLy8N4eZyeSH0C2GAcagHqafiwEBTAeEKCoFO0M9rBhOAQt2HjVEjTHll-gqhA0AZpyyHprMdm1VmG0yH41f3pP5IbTu6zF5NrX9rWy7Tubmp6pXyTJ096Op05lv182qqbvMPk-HxvvK-XCNLkqzDe7m9PtoOR4thpN0Ont9Gz5N04Jy0aaFKA1jUilQRBohpRVMWFAml0AyKuJcVxhuTW4Lk5eSK-CE05JCbp0oJO2j-2PvzjffexdavWn2Pq4JGnNgPFZjFl1wdBW-CcG7Uu989WX8QWPQHS8deemOlz7xipG7Y6Ryzv3bs0zIjAD9A0jZZPI</recordid><startdate>20140215</startdate><enddate>20140215</enddate><creator>Darwazeh, Izzat</creator><creator>Tongyang Xu</creator><creator>Tao Gui</creator><creator>Yuan Bao</creator><creator>Zhaohui Li</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| subjects | Adaptive optics Bandwidth direct detection fixed sphere decoder iterative detection OFDM Optical distortion Optical fiber communication Optical modulation Optical receivers Optical transmitters SEFDM spectral efficiency |
| title | Optical SEFDM System; Bandwidth Saving Using Non-Orthogonal Sub-Carriers |
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