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Analysis of Carrier Phase and Group Delay Biases Introduced by CRPA Hardware
Carrier Phase Group Delay Biases Introduced CRPA Hardware
2015/6/26
The benefits afforded by Controlled Reception Pattern Antennas (CRPAs) in multipath and interference mitigation are well documented, and they find use in many applications today. As such, CRPAs are be...
Experimental demonstration of two methods for controlling the group delay in a system with photonic-crystal resonators coupled to a waveguide
two methods controlling group delay system photonic-crystal resonators coupled waveguide
2015/8/10
We measure the group delay in an on-chip photonic-crystal device with two resonators side coupled to a waveguide.We demonstrate that such a group delay can be controlled by tuning either the propagati...
Real-Time Ultra-broadband Group Delay Monitoring through Quasi-Incoherent Processing
Fiber Bragg gratings Fiber optics communications Fiber optics components Bragg reflectors Dispersion compensation devices
2015/5/25
Simple method for real-time ultra-broadband group delay measurement of photonic devices is reported, demonstrating accurate group delay ripple monitoring of a 10m-long chirped fiber grating over the f...
Improvement of Chromatic Dispersion and Differential Group Delay Tolerance of Incoherent Multilevel Signaling with Receiver-side Digital Signal Processing
Fiber optics communications Modulation
2015/6/10
Chromatic dispersion and differential group delay tolerance of 30-Gbit/s 8DPSK and 8QAM signaling is investigated experimentally, and we show 1.7 and 1.25 times enhancement of them in 8QAM signaling b...
Channel Group-Delay- and Polarization-Insensitive Wavelength Conversion of Multichannel Polarization-Shift Keying Signal
Fiber optics communications Nonlinear optics four-wave mixing
2015/6/4
Weexperimentallydemonstrate,simultaneousall-opticalwavelengthconversionformul-tichannelpolarization-shiftkeying(PolSK)signalusingfour-wave-mixinginhighlynon-linearfiber.The proposed multichannel wavel...
Suppression of Inter-Channel Nonlinearities in WDM Coherent PDM- QPSK Systems Using Periodic-Group-Delay Dispersion Compensators
Inter-Channel Nonlinearities WDM Coherent PDM- QPSK Systems Periodic-Group-Delay
2015/7/17
We show that periodic-group-delay dispersion compensators can significantly suppress inter-channel nonlinearities in a WDM coherent polarization-division-multiplexed quardrature-phase-shift-keying sys...
Suppression of XPM Penalty in Dispersion Managed Hybrid 10G/40G/100G DWDM Networks Using Group Delay Management
XPM Penalty Dispersion Managed Hybrid DWDM Networks Group Delay Management
2015/7/17
We propose a novel group delay management technique which effectively suppresses XPM accumulation in hybrid 10G/40G/100G DWDM networks. Systematic investigation reveals its high effectiveness for vari...
基于信号分解和群延时的维格纳分布改进方法（Improved Wigner Ville Distribution Based on Signal Decomposition and Modified Magnitude Group Delay）
Wigner Ville分布 离散余弦谐波小波变换 交叉项抑制 修改群延时函数 吉布斯效应
2010/2/26
提出一种WVD (Wigner Ville distribution)的改进方法。应用离散余弦谐波小波变换对多分量信号进行分解，计算分解后得到的单分量信号的WVD，将单分量信号的WVD沿频率轴串联得到整个信号的WVD，抑制分布的交叉项。应用修改群延时函数减少因WVD核函数截断而产生的波动效应，改善分布的时频分辨率。通过算例中的线性调频信号和应用实例中轴承振动信号验证表明，改进后的WVD有满意的时频...