搜索结果: 121-135 共查到“工学 OFDM”相关记录632条 . 查询时间(0.135 秒)
Recent Progress on Real-Time DSP for Direct Detection Optical OFDM Transceivers
Recent Progress Real-Time DSP Direct Detection Optical OFDM Transceivers
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2015/5/20
We describe recent developments in real-time digital signal processing for direct detection optical OFDM transceivers, including the optimization of high throughput FFT algorithms and receiver synchro...
First Experimental Demonstration of Low-Cost VCSEL- Intensity Modulated End-to-End Real-Time Optical OFDM Signal Transmission at 11.25Gb/s over 25km SSMFs
VCSEL Intensity Modulated OFDM Signal Transmission
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2015/5/20
Low-cost, narrow modulation bandwidth, un-cooled VCSELs can be utilized to directly modulate 64-QAM-encoded 11.25Gb/s signals for end-to-end real-time optical OFDM transmission over 25km SSMF IMDD sys...
64/32/16QAM-OFDM using Direct-Detection for 40G-OFDMA-PON Downstream
64/32/16QAM-OFDM Direct-Detection 40G-OFDMA-PON Downstream
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2015/5/20
A 43.6Gb/s downstream OFDMA-PON is demonstrated using optical single-side band 64/32/16QAMOFDM signals and direct-detection receiver through 20km SSMF. Only one photodiode/OFDM receiver is required at...
2.1-Tb/s·km OFDM Long-Reach PON Transmission using a Cost-Effective Electro-Absorption Modulator
2.1-Tb/s·km OFDM Long-Reach PON Transmission Cost-Effective Electro Absorption Modulator
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2015/5/20
We experimentally demonstrate a superior performance of 2.1-Tb/s·km OFDM-signal transmission over 100-km long-reach PONs, which is achieved by using an EAM and direct-detection, and adopting the 128-Q...
7dB Optical Power Budget Improvements of 11.25Gb/s Optical OFDM PON Systems Using Optical Filters
7dB Optical Power Budget Improvements 11.25Gb/s Optical OFDM PON Systems Optical Filters
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2015/5/20
Wavelength offset super Gaussian optical filters enable 7dB increases in optical power budget of 11.25Gb/s optical OFDM PON systems using directly modulated DFBs, considerably relax filter bandwidth r...
7dB Optical Power Budget Improvements of 11.25Gb/s Optical OFDM PON Systems Using Optical Filters
7dB Optical Power Budget Improvements 11.25Gb/s Optical OFDM PON Systems Optical Filters
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2015/5/20
Wavelength offset super Gaussian optical filters enable 7dB increases in optical power budget of 11.25Gb/s optical OFDM PON systems using directly modulated DFBs, considerably relax filter bandwidth r...
“Real World” FTTH Optical-to-Radio Interface Performance for Bi-directional Multi-Format OFDM Wireless Signal Transmission
Real World FTTH Optical Radio Interface Performance Bi-directional OFDM Wireless Signal Transmission
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2015/5/18
The optical-to-radio and radio-to-optical interfaces in fiber-to-the-home access networks were evaluated for LTE, WiMAX and UWB simultaneous distribution. Successful bi-directional transmission was ac...
Statistical Investigations of Optical OFDM Adaptive Loading Algorithm over 1000 Worst-Case MMFs
Optical OFDM Adaptive Loading Algorithm MMFs Statistical Investigations
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2015/5/18
Bit-and-power-loading(BPL) [power-loading (PL)] offers the best (worst) performance.For MMFs of <300m PL is effective for escalating an optical OFDM MMF link performance to its maximum potential; for ...
Energy-efficiency Study of Optical OFDM in Data Centers
Energy-efficiency Optical OFDM
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2015/5/18
This paper presents a study on the energy efficiency of adaptive optical OFDM in data center’s networks. The DSP architecture of the proposed scheme is targeted to an FPGA and achieves more than 70% l...
Complete Mitigation of Brillouin Scattering Effects in Reflective Passive Optical Networks using Triple-Format OFDM Radio Signals
Brillouin Scattering Effect Passive Optical Network Triple-Format OFDM Radio Signals
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2015/5/18
Brillouin scattering is identified as a severe limitation in narrow line-width,bi-directional reflective systems. A spectrum management mitigation technique for triple-format OFDM signals is demonstra...
Impact of RF Noise on Transmission Performance of Multiband OFDM UWB over Fiber Systems
RF Noise Multiband OFDM UWB over Fiber Systems Transmission Performance
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2015/5/15
We investigate the performance of multiband OFDM ultra wideband (UWB) signal over fiber system considering the impact of RF noise. A compensation technique is proposed to reduce RF noise impact.
Significant Overhead Reduction of Multi-band Tb/s Coherent Optical OFDM Systems
Multi-band Tb/s Coherent Optical OFDM Systems Overhead Reduction
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2015/5/15
The timing and optical laser phase of individual bands in multi-band OFDM are correlated. We significantly reduce the OFDM overhead through using FFT window synchronization for channel estimation and ...
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...