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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 order to improve the ability of harmonic reduction at DC link of multi-pulse rectifier (MPR), the harmonic reduction mechanism at DC link of two kinds of 24-pulse rectifiers with double-tapped interphase reactor (IPR) or auxiliary single-phase full-wave rectifier (ASFR) was investigated. According to the configuration and Ampere-Turn balance with double-tapped IPR and single full wave rectifier,...
In order to enhance the ability of harmonic suppression for multi-pulse converters (MPCs). This paper proposes a novel pulse multiplication method at DC side of MPCs. The presented rectifier consists of a three-phase bridge parallel structure 12-pulse rectifier and a novel double winding tapped inter-phase converter (TIPC). The functions and characteristics of delta-connected autotransformer and ZSBT...
We experimentally demonstrate the high speed DPSK modulation and demodulation for short reach optical communications by using a silicon microring modulator and a Sagnac interferometer at speed up to 30 Gb/s.
HY-2B, the second China's satellite for oceanic dynamic environment measurement, is scheduled to launch at 2018. To improve the capability, some new methods are adopted in HY-2B altimeter design. By these means, the long term stability of the instrument is improved compared with HY-2A altimeter. In this paper, the improved design based on a rubidium atomic clock for HY-2B altimeter is discussed in...
The 2-μm waveband has gained much attention due to its potential applications in data communications and optical sensing. This wavelength range is of particular interests for integrated platform as it is transparent for silicon and is free of two photon absorption. We experimentally demonstrate a 2-μm silicon focusing grating coupler with subwavelength structure. The theoretical coupling efficiency...
A high-speed traveling wave electro-absorption modulator based on grapheme-micro fiber is designed. Graphene modulates the optical transmission intensity by changing its fermi level under different applied voltages. Graphene has an extremely high carrier mobility which has a potential electrical bandwidth of 500 GHz. However, the bandwidth of the state-of-art graphene based modulator is limited by...
In this contribution, we propose a novel nonlinear Model Predictive Control (NMPC) formulation based on the optimal control method Discrete Mechanics and Optimal Control (DMOC). We discuss the properties of the novel approach and compare it with the standard NMPC formulation based on the Multiple-Shooting method using numerical simulations. We also consider the real-time application of the NMPC algorithm...
Communication security is one of the most significant issues to draw people's attention in vehicular ad-hoc networks (VANETs). To prevent from malicious nodes and ensure the confidence and integrity of the messages, vehicles have to authenticate each other and support message signature and encryption. As the most prospective approaches, though the generally accepted wireless access for vehicular environment...
Many broadcast protocols have been proposed in Vehicular ad-hoc Network (VANET) for safety applications and traffic efficiency. GeoBroadcast, which the sender sends information to the geographical area, has been standardized by the ETSI Technical Committee ITS. The routing protocol is a key technology satisfying communication requests of high reliability, low delay and universality for GeoBroadcast...
Cloud radio access network (C-RAN) and mobile edge computing (MEC) have emerged as promising candidates for the next generation access network techniques. Unfortunately, although MEC tries to utilize the highly distributed computing resources in close proximity to user equipments equipments (UE), C-RAN suggests to centralize the baseband processing units (BBU) deployed in radio access networks. To...
Containers have been used in many applications for isolation purposes due to the lightweight, scalable and highly portable properties. However, to apply containers in virtual network functions (VNFs) faces a big challenge because high-performance VNFs often generate frequent communication workloads among containers while the container communications are generally not efficient. Compared with hardware...
Recent advances in high speed rails (HSRs), coupled with user demands for communication on the move, are propelling the need for acceptable quality of communication services in high speed mobility scenarios. This calls for an evaluation of how well popular voice/video call applications, such as Skype, can perform in such scenarios. This paper presents the first comprehensive measurement study on Skype...
A machine learning method of effective nonlinear decision frame for PAM-N system based on support vector machine (SVM) using complete binary tree (CBT) structure is demonstrated in this work. The simulations results indicate improved performance by the proposed classifier which enhances the power sensitivity by 2-dB and 6-dB at the receiver side in 100-Gbps PAM-4 and PAM-8 systems respectively.
We demonstrate a single wavelength discrete multi-tone interconnect with on-chip mode-division multiplexing and off-chip multicore fiber. A gross data rate of 312 Gb/s is achieved under HD-FEC limit of 3.8 × 10−3.
The performance of underwater acoustic target recognition system decreases significantly mainly due to the complex underwater acoustic conditions. Nevertheless, human auditory system is capable of segregating different targets in noisy conditions. Several auditory-based features have been applied to underwater acoustic target recognition, but only represent amplitude of the signal. However, phase...
In order to enhance the performance of the existing beamformer-based direction-of-arrival (DOA) estimation methods, a novel DOA estimation method based on the sparse and low-rank decomposition of the sample covariance matrix is proposed. First, the sample covariance matrix is divided into the covariance matrix of the desired signal and interference as well as that of noise. The first component is...
The histogram algorithm based on sound intensity having been widely used to estimate the azimuths of underwater acoustic targets. The advantage of this algorithm is that all we need is a single vector hydrophone to distinguish multiple targets' azimuths. The histogram approach acquiesces in that the acoustic pressure is perfectly correlated with the particle velocity. However, the sound field excited...
Specific Emitter Identification (SEI) is one of most difficult tasks in modern electronic warfare. The principle function of the SEI is utilizing fingerprint features to identify different emitters of the same type by a precise measurement, which plays an important role in the recognition process. Under the premise that the time-domain waveforms such as the instantaneous amplitude and frequency are...
A novel wearable sensor system for seizure monitoring of neonates comprised of smart clothing, video recording and cloud platform is presented. Textile electrodes and Inertial Measurement Unit (IMU) are embedded in the smart clothing to obtain ECG signal and motion signal whereby epileptic seizure detection algorithm is performed. Moreover, a video monitoring module provides real-time information...
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