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We experimentally generated single wavelength 80 Gbit/s signals at 1952 nm with intensity modulated filter bank multicarrier scheme. Its transmission over 100m solid core SMFs was demonstrated with BER below FEC limit of 3.8 × 10−3.
In a haptic shape task, the human ability to discriminate objects on basis of their shape, as defined by active exploratory movements of the hand, is dependent on receptors located in the skin and deep structures. The shape of a 2-d object is a function of its geometric properties, including the pattern of the surfaces that form the object, their density, their size, and their spatial features. It...
Recently, virtual reality (VR) have received increasing attention. For the development of VR, human recognition mechanism is a crucial factor. Previous neuroimaging studies of the visual recognition have found that mechanism of recognition is different on retinal eccentricity of visual field. For example, when we recognize the face, the building and the scene, we use the central vision field. However...
Reading in a second language (L2) is a complex task that entails an interaction between L2 and the native language (L1). Previous studies have suggested that bilingual subjects recruit the neural system of their logographic L1 (Chinese) reading and apply it to alphabetic L2 (English) reading. These findings have lent strong support to the idea that language experience shapes the cortex. Whether languages...
Although previous studies have demonstrated visual processing in detection and discrimination task in human, how detection and discrimination task alter visual processing has not yet been completely elucidated. To investigate this issue, we design performing two classical perceptual tasks: 1) grating detection experiment, 2) grating orientation discrimination experiment. In grating detection experiment,...
Converging evidence indicates that spatial information of stimuli plays an important role in multisensory interaction. The spatial characteristics of auditory stimuli tended to be biased toward the spatial characteristics of visual stimuli. Many studies have shown that spatial consistency of audiovisual stimuli can influence the interaction between visual and auditory stimulus, however, the multisensory...
We proposed and demonstrated an optimized in-band optical signal-to-noise ratio (OSNR) monitoring method for polarization division multiplexed coherent optical coherent optical orthogonal frequency division multiplexing (PDM-CO-OFDM) system with CAZAC equalization and Raman amplification, and it shows satisfactory accuracy in a wide range.
We propose a quasi-single-mode transmission scheme using hybrid few-mode-fiber (FMF) and single-mode-fiber (SMF) span with Raman amplification for CO-OFDM system. No multi-path interference (MPI) compensation algorithm is used
New designs of infinite impulse response (IIR) wideband digital integrators of second-, third- and forth-order are presented in this paper. These new integrators are designed by a recently proposed magnitude constrained minimax phase-error method. In these designs, the maximum phase response error is minimized under some constraints that the maximum relative magnitude response error is below a prescribed...
Magnitude-error and phase-error constrained optimal designs of finite impulse response (FIR) filters are nonconvex problems due to the nonconvexity of the lower-bound constraint of magnitude at any passband frequency point. In order to solve these problems, the nonconvex constraint region at an arbitrary passband frequency is usually approximated by a convex one. In this paper, a new convex constraint...
We proposed a cost-efficient large-capacity WDM-SDM optical access network employing MCF and self-homodyne detection. 4 × 6 × 200-Gb/s PDM-16QAM-OFDM downstream transmission was realized over 37-km 7-core fiber with simplified DSP enabling use of low-cost 10MHz linewidth DFB lasers.
In order to avoid the low stability of memory and the uncertainty of global minimum point, a new algorithm based on harmony search that optimizes the weights and the thresholds of BP neural net is proposed to predict the traffic parameters. Then the algorithm is improved to increase the running speed. The other advantage is that the algorithm combines the nonlinear fitting capability of BP neural...
A novel anti/de-icing system combining heat expansion film and electric heating for helicopter rotor based on composite materials has been developed. The device is installed on the surface of the helicopter rotor icing area, which main parts include: rotor skin, electric anti/de-icing system, heat expansion film anti/de-icing system and icing sensor used to detecting ice thickness of rotor. Heat expansion...
Considering the multivariable influence on the temperature field of anti-icing component, a numerical simulation model coupling multi-field for helicopter rotor anti-icing composite structure component under big data environment was presented. The multi-parameters were the main influencing factors in heat transfer numerical simulation. Convective heat transfer and heat conduction coupling was analysis...
Two independent 2.5-Gb/s DDO-OFDM signals are simultaneously transmitted over 25km SMF using digital domain power division multiplexing and successive interference cancellation. With optimized power division ratio and enhanced SD-FEC, the spectral efficiency can be doubled.
Optical OFDM transmission with phase modulation and direct detection (PMDD) is verified by theoretical derivation and simulation. 26.12-Gb/s PMDD 16QAM-OFDM achieves comparable performance to single sideband IMDD 16QAM-OFDM with half of the optical modulation index.
As the energy crisis has become increasingly prominent, for power supply products, people's attention is no longer focused on CAPEX (Capital Expenditure) only; OPEX (Operating Expense) is also becoming more and more important. The constant pursuit of efficiency improving for power supply products has become an inevitable trend. This paper introduces a 3000W super high efficient rectifier module with...
With the prevalence of social networks, social recommendation is rapidly gaining popularity. Currently, social information has mainly been utilized for enhancing rating prediction accuracy, which may not be enough to satisfy user needs. Items with high prediction accuracy tend to be the ones that users are familiar with and may not interest them to explore. In this paper, we take a psychologically...
An optimization algorithm (LEA algorithm) of wireless sensor networks based on network fractal dimension calculation is proposed and intended to tackle energy limitation of nodes and their imbalanced energy consumption. Compared with LEA algorithm about the energy consumption, which is based on both long range dependence model (PFM model) and short range related model (TIAF model), where PFM and TIAF...
A 4×25.1 Gbit/s WDM system based on intensity modulation and direct detection is presented. 50-km SSMF transmission of 32QAM-FBMC was realized with BER under FEC limit. Moreover, a receiver sensitivity improvement of nearly 1.5 dB was achieved by introducing CAZAC-Precoding.
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