搜索结果: 61-75 共查到“光学工程 OFDM”相关记录154条 . 查询时间(0.131 秒)
The Impact of the Combined 8-QAM and QPSK Subcarrier Modulation for Coherent Optical OFDM
8-QAM QPSK Subcarrier Modulation OFDM
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2015/5/15
We investigated the optimized signal condition of the combined 8-QAM and QPSK subcarrier modulation for optical OFDM. The performance improvement was confirmed by WDM transmission experiments with the...
Experimental Demonstration of Adaptive Bit and/or Power Loading for Maximising Real-Time End-to-End Optical OFDM Transmission Performance
Adaptive Bit Real-Time End-to-End Optical OFDM Transmission Performance
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2015/5/15
For the first time adaptive bit and/or power loading of real-time, end-to-end optical OFDM transceivers are experimentally demonstrated and compared. Low-complexity power loading only results in a pen...
A Novel Method for Precise Symbol Synchronization in Double-Side Band Optical Fast OFDM
Novel Method OFDM Symbol Synchronization
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2015/5/15
We propose a novel method to achieve precise symbol synchronization using one training symbol in DSB optical fast OFDM (FOFDM). World-first FOFDM transmission experiment using field-installed fiber ve...
Specialty Fiber Evaluation for In-building Distribution of Multiple-Format OFDM Radio Signals
OFDM Radio Signal building Distribution Specialty Fiber
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2015/5/15
Optical fiber options for deployment within the home environment were investigated for distribution of triple-play services. Corning ClearCurve® ZBL single-mode bend-insensitive optical fiber per...
3× × 485-Gb/s WDM Transmission over 4800 km of ULAF and 12× × 100-GHz WSSs Using CO-OFDM and Single Coherent Detection with 80-GS/s ADCs
WDM Transmission GHz WSS CO-OFDM 80-GS/s ADC
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2015/5/15
We demonstrate WDM transmission of three 485-Gb/s CO-OFDM channels with 16-QAM subcarrier-modulation, each received by a single coherent detection step.Transmission over 48 100-km ULAF spans and 12 wa...
432Gbit/s O-OFDM QPSK signal transmission over 400km SMF-28 with EDFA-only amplification
O-OFDM QPSK signal transmission
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2015/5/15
432Gbit/s O-OFDM QPSK transmitter has been proposed and experimentally demonstrated.After transmission over 400km standard single-mode fiber (SMF), the measured BER is smaller than 2 ×10 -5 .
1-Tb/s Large Girth LDPC-Coded Coherent Optical OFDM Transmission over 1040-km Standard Single-Mode Fiber
Large Girth LDPC-Coded Coherent Optical OFDM Standard Single-Mode Fiber
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2015/5/15
We experimentally demonstrate 1-Tb/s CO-OFDM transmission over 1040-km standard single-mode fiber using 50% overhead girth-12 LDPC-coded 16-QAM. More than 4-dB improvement in OSNR sensitivity is achie...
Coherent Optical DFT-Spread OFDM
Fourier transform-spread single-carrier technique MMSE
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2011/4/21
We consider application of the discrete Fourier transform-spread orthogonal frequency-division multiplexing (DFT-spread OFDM) technique to high-speed fiber optic communications. The DFT-spread OFDM is...
Novel Optical Fast Fourier Transform Scheme Enabling Real-Time OFDM Processing at 392 Gbit/s and Beyond
Optical communications Discrete optical signal processing
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2015/6/10
An optical FFT scheme is implemented and tested at 392 Gbit/s. It enables OFDM sig-nal processing way beyond the bandwidth limits of electronics. The scheme operates with little energy as it exploits ...
Adaptive IP/Optical OFDM Networking Design
Optical communication Networks
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2015/6/10
A new networking approach based on IP/optical OFDM technologies is proposed,providing an adaptive mechanism of bandwidth provisioning and pipe resizing for dynamic traffic flows. A comparison study is...
On the Spectrum-Efficiency of Bandwidth-Variable Optical OFDM Transport Networks
Spectrum-Efficiency Bandwidth-Variable Optical OFDM Transport Networks
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2015/6/10
We investigated the high spectrum efficiency property of the bandwidth-variable optical OFDM (BV-OOFDM) transport networks. In contrast to mixed-line-rate (MLR) networks, BV-OOFDM enables flexible all...
Efficient Digital Coherent Detection of A 1.2-Tb/s 24- Carrier No-Guard-Interval CO-OFDM Signal by Simultaneously Detecting Multiple Carriers Per Sampling
Coherent communications Phase modulation
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2015/6/10
We experimentally demonstrate efficient detection of a 1.2-Tb/s 24-carrier NGI-CO-OFDM signal with 12.5-Gbaud PDM-QPSK carrier-modulation by simultaneously recovering 2 or 3 carriers per 50-GSamples/s...
A scalable optical packet switch with label processing for DPSK and OFDM data packets
Switching packe Optical processing Wavelength filtering devices
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2015/6/10
We present a scalable and low latency optical packet switch for DPSK and OFDM packets. Results show error-free operation of 1x64 optical packet switch for 12x10 Gb/s DPSK packets and 12x40Gb/s OFDM pa...
A Novel Subcarrier OFDM-MSK WDM Passive Optical Network
Networks Fiber optics communications
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2015/6/9
We experimentally propose and demonstrate generation, transmission and reception of the optical OFDM-MSK modulation in WDM-PON. Our experimental results suggest that OFDM-MSK modulation scheme will be...
Demonstration of Bit Rate Variable ROADM functionality on an Optical OFDM Superchannel
Coherent communications Multiplexing
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2015/6/9
We demonstrate a bit rate variable add- and drop function performed on an optical OFDM superchannel signal by optical filtering and superposition of OFDM subbands and the application of different modu...