搜索结果: 91-105 共查到“光学工程 OFDM”相关记录154条 . 查询时间(0.084 秒)
Statistical transmission experiments using a real-time 12.1 Gb/s OFDM transmitter
Networks network optimization Modulation
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2015/6/8
A highest speed 12.1 Gb/s real-time OFDM transmitter is reported with optimized Q-factor (Q=22.3dB). Statistical performance measurements using BER testing prove similar error distributions for 2 31 -...
110-Gb/s Multi-band Real-time Coherent Optical OFDM Reception after 600-km Transmission over SSMF Fiber
Fiber optics links subsystems Coherent communications
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2015/6/8
We demonstrate real-time reception of a 110-Gb/s multi-band OFDM signal after transmission of 600-km SSMF fiber and 400-ps differential-group-delay. The performance of 110-Gb/s CO-OFDM signal is chara...
Transmission of 5x62 Gbit/s DWDM Coherent OFDM with a Spectral Efficiency of 7.2 Bit/s/Hz using Joint 64-QAM and 16-QAM Modulation
Modulation Coherent communications
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2015/6/8
Transmission of 5x62 Gbit/s polarization multiplexed coherent OFDM is demonstrated over 80 km SSMF. Using 64-QAM and 16-QAM simultaneously allows reducing the channel spacing and makes a net spectral ...
Transmission of 44-Gb/s Coherent Optical OFDM Signal with Trellis-Coded 32-QAM Subcarrier Modulation
Coherent communications Fiber optics communication
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2015/6/8
We experimentally demonstrate the transmission of a spectrally-efficient 44-Gb/s CO-OFDM signal whose subcarriers are trellis-coded with 32-QAM over a 990-km dispersion-managed SSMF link, and show the...
A Novel Optical Fast OFDM with Reduced Channel Spacing Equal to Half of the Symbol Rate Per Carrier
Fiber optics communications Modulation
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2015/6/8
We propose a novel discrete-cosine-transform based optical fast OFDM (FOFDM) to reduce the channel spacing to half of the symbol rate per carrier, and numerically evaluate the performance of 20Gbaud P...
Transparent WDM Network with Bitrate Tunable Optical OFDM Transponders
Networks network optimization Modulation
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2015/6/5
Reach estimations for several variable-bitrate OFDM schemes are presented and discussed in the framework of a transparent EU core network scenario. 44% reduction on OE interfaces is found compared to ...
Experimental Analyses and Optimization of Equalization Techniques for 60-GHz OFDM Radio-over-Fiber System
Fiber optical communications Fiber optics links subsystems
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2015/6/4
We experimentally investigated transmission performance of 16QAM-OFDM signal over 25-km fiber and 5-m air distance using 60GHz ROF technology. It is the first time that the details of optimal equaliza...
Optimization and Comparison of the Transmission Performance of RSOA/SOA Intensity-Modulated Optical OFDM Signals for WDM-PONs
Fiber optics communications Modulation Semiconductor optical amplifiers
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2015/6/4
For optical OFDM IMDD systems, optimum operating conditions of RSOA/SOA intensity modulators are identified, under which similar performances are obtained for different modulators. Under low-cost comp...
Broad Convergence of 32QAM-OFDM ROF and WDM-OFDM-PON System Using an Integrated Modulator for Bidirectional Access Networks
Networks Optical Communications
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2015/6/4
We propose and demonstrate a novel architecture of converged 32QAM-OFDM ROF and WDM-OFDM-PON by employing an integrated modulator. The 10Gb/s 16QAM-OFDM wired signal, 1Gb/s 32QAM-OFDM wireless signal ...
ANovel WDM-OFDM-PONArchitecture with Centralized Lightwave and PolSK-assisted Multicast Overlay
Networks Optical Communications
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2015/6/4
We experimentally demonstrate a novel WDM-OFDM-PON architecture with centralized lightwave sources and PolSK multicast overlay. The 10Gb/s P2P signals, 2.5Gb/s multicast signals and 2.5Gb/s upstream s...
Optical Biasing in Direct Detection Optical-OFDM for Improving Receiver Sensitivity
Fiber optics communications Modulation
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2015/6/4
We show that replacing of electrical by an optical biasing minimizes the nonlinearity effect of an optical modulator. This allows the amplitude of the driving signal to be increased which increases th...
Improvement of Phase Noise Compensation for Coherent Optical OFDM via Data-Aided Phase Equalizer
Modulation Coherent communications
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2015/6/4
We report a novel data-aided phase equalizer for coherent optical OFDM systems with RF-pilot enabled phase noise compensation. Simulation results corroborate the superior performance for different RF-...
Experimental Demonstration on the Reduction of Linewidth Impact in a Self-Heterodyne Optical OFDM System
Fiber optics communications Modulation
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2015/6/4
We show experimentally that the signal quality of a self-heterodyne optical OFDM system can be improved by temporally realigning the carrier with the subcarriers before photodetection. This can be exp...
PDL Mitigation in PolMux OFDM Systems using Golden and Silver Polarization-Time Codes
Fiber optics communications Optical communications Modulation
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2015/6/4
Polarization-Time coding can highly mitigate PDL impairments in optical OFDM sys-tems. The performances of two full-rate Polarization-Time codes, the Golden and Silver codes, have been evaluated showi...
Fiber Nonlinearity Mitigation in 428-Gb/s Multiband Coherent Optical OFDM Systems
Fiber optics communications Coherent Communications
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2015/6/4
We propose DFT-spread (DFT-S) OFDM within each sub-band of multiband-CO-OFDM to mitigate fiber nonlinearity. For 1000-km standard-single-mode-fiber transmission at 420-Gb/s, 32-band DFT-S CO-OFDM outp...