Title :
FHT-based architectures for multicarrier modulation in direct detection and coherent optical systems
Author :
Moreolo, Michela Svaluto ; Fàbrega, Josep M. ; Nadal, Laia ; Junyent, Gabriel
Author_Institution :
Centre Tecnol. de Telecomunicacions de Catalunya (CTTC), Castelldefels, Spain
Abstract :
In this paper, flexible architectures based on the fast Hartley transform (FHT) for multicarrier modulation are presented. The analysis of performance using large size constellations shows that the proposed architectures furnish an alternative OFDM scheme for adaptive high-speed optical systems. Moreover, it is demonstrated that FHT modulation is suitable for cost-effective unamplified and ASE-dominated optical OFDM systems. Low-complexity PAPR reduction techniques can be easily and efficiently implemented. Finally, the FHT is advantageously used in a phase modulated coherent scheme for implementing a 0 dB PAPR constant envelope O-OFDM.
Keywords :
Hartley transforms; OFDM modulation; optical communication equipment; phase modulation; superradiance; PAPR constant envelope O-OFDM; adaptive high-speed optical systems; coherent optical systems; direct detection systems; fast Hartley transform based architectures; flexible architectures; low-complexity PAPR reduction; multicarrier modulation; peak-to-average power ratio; phase modulated coherent system; unapmlified ASE-dominated optical OFDM systems; High speed optical techniques; Integrated optics; OFDM; Optical fibers; Optical modulation; Optical receivers; Optical OFDM; PAPR; coherent systems; direct detection; discrete Hartley transform;
Conference_Titel :
Transparent Optical Networks (ICTON), 2011 13th International Conference on
Conference_Location :
Stockholm
Print_ISBN :
978-1-4577-0881-7
Electronic_ISBN :
2161-2056
DOI :
10.1109/ICTON.2011.5971031
