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dc.contributor.authorWei, Chia-Chienen_US
dc.contributor.authorZeng, Wei-Siangen_US
dc.contributor.authorLin, Chun-Tingen_US
dc.date.accessioned2019-04-03T06:44:32Z-
dc.date.available2019-04-03T06:44:32Z-
dc.date.issued2016-01-25en_US
dc.identifier.issn1094-4087en_US
dc.identifier.urihttp://dx.doi.org/10.1364/OE.24.001823en_US
dc.identifier.urihttp://hdl.handle.net/11536/133041-
dc.description.abstractWe experimentally demonstrate a spectrally efficient direct-detection orthogonal frequency-division multiplexing (DD-OFDM) system. In addition to polarization-division multiplexing, removing the frequency gap further improves the spectral efficiency of the OFDM system. The frequency gap between a reference carrier and OFDM subcarriers avoids subcarrier-to-subcarrier beating interference (SSBI) in traditional DD-OFDM systems. Without dynamic polarization control, the resulting interference after square-law direct detection in the proposed gap-less system is polarization-dependent and composed of linear inter-carrier interference (ICI) and nonlinear SSBI. Thus, this work proposes an iterative multiple-input multiple-output detection scheme to remove the mixed polarization-dependent interference. Compared to the previous scheme, which only removes ICI, the proposed scheme can further eliminate SSBI to achieve the improvement of similar to 7 dB in signal-to-noise ratio. Without the need for polarization control, we successfully utilize 7-GHz bandwidth to transmit a 39.5-Gbps polarization multiplexed OFDM signal over 100 km. (C) 2016 Optical Society of Americaen_US
dc.language.isoen_USen_US
dc.titleSpectrally efficient polarization multiplexed direct-detection OFDM system without frequency gapen_US
dc.typeArticleen_US
dc.identifier.doi10.1364/OE.24.001823en_US
dc.identifier.journalOPTICS EXPRESSen_US
dc.citation.volume24en_US
dc.citation.issue2en_US
dc.citation.spage1823en_US
dc.citation.epage1828en_US
dc.contributor.department光電系統研究所zh_TW
dc.contributor.departmentInstitute of Photonic Systemen_US
dc.identifier.wosnumberWOS:000369066300143en_US
dc.citation.woscount7en_US
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