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In this paper, we propose a tracking mechanism for the residual sampling clocking offset (SCO) with corresponding pilot and auxiliary pilot arrangements for filter bank multi-carrier (FBMC) offset QAM (OQAM) baseband receiver in the 60 GHz band. This work can effectively compensate the non-ideal effects on the high-band subcarriers while using more data subcarrier for increasing bandwidth efficiency...
A singular-value-decomposition (SVD) engine for 8×8 MIMO precoding systems is designed and implemented. The memory-based architecture is adopted with eight processing elements, each having two CORDIC modules. Two-phase operations are performed including bidiagonalization and Golub-Reinsch SVD (GR-SVD) with Rayleigh quotient shift. The split, deflation, and shift techniques of GR-SVD can effectively...
The DIBL effect is well-known in short-channel devices. Using this good effect, we can detect the device integrity with channel-length or -width variation and the channel punch-through effect, causing more leakage contributing the OFF current. As the channel width is increased at the long-channel lengths, the punch-through voltage (VPT) is also increased little due to the more uniformity of halo implantation...
One of the major advantages of smart grid is to allow a large number of electric vehicles (EVs) to participate in energy dispatch as elastic energy storage devices via vehicle-to-grid (V2G) technology. As mechanism design for V2G energy trading can stimulate energy interaction between EVs and grids, it is really significant to V2G systems. This paper focuses on efficient mechanism design for energy...
In recent years, the population of Taiwan's rural getting older, the young outflowing and the industry declining that lead to the development in rural areas is limit. All organizations use the concept of the community building to carry out different ways of reform, whether it is government agencies or private spontaneous groups. The Art involved performance is one of the ways. This study takes the...
We present a novel reconstruction method for the appearance-based gaze estimation that allows inferring persons' gaze under natural head movement. We first study that the locally linear combination in the respective manifolds consisting of stable left and right eye appearances is efficient. The local structure of the manifolds is destroyed when there is head movement. This is due to the destruction...
In the chemical industry, packed columns are commonly used operating units for separation. However, the flooding phenomenon often reduces the efficiency of packed columns and interferes with the performance of the system. Due to this reason, research on the real-time prognosis of flooding becomes a necessity in practice. Pressure drop is a key factor that indicates flooding phenomenon in packed columns...
In wireless sensor networks (WSNs), how to gather the sensory data efficiently is a major challenge to deploy effective sensor systems. The compressive sensing (CS) provides an improved data acquisition method in WSNs by exploiting a priori data sparsity information. Moreover, the concept of group sparsity has been evolved into signal recovery, which can further enhance the recoverability. In this...
Due to the rapid growth of event-based social networks (EBSNs), event recommendation which helps users find their preferred events has become a popular topic. Different from movies or books in conventional recommendation problem, events usually have recommendation lifetimes and almost all the events to be recommended are upcoming, which brings a severe cold start problem. To achieve better event recommendation...
We demonstrate a high spatial resolution multiplexing scheme for fiber Bragg grating (FBG) sensors based on single-arm frequency-shifted interferometry (SA-FSI). The SA-FSI system uses an incoherent broadband source, a slow detector, and an electro-optic modulator (EOM). By sweeping the frequency of EOM and taking the fast Fourier transform (FFT) of the interference signal, we resolved the locations...
User-managed-events is a popular feature on social networks. Take Facebook Events as an example: over 135 million events were created in 2015 and over 550 million people use events each month. In this work, we consider the heavy sparseness in both user and event feedback history caused by short lifespans (transiency) of events and user participation patterns in a production event system. We propose...
Due to the opportunities provided by the Internet, people are taking advantage of e-learning courses and enormous research efforts have been dedicated to the development of e-learning systems. So far, many e-learning systems are proposed and used practically. However, in these systems the e-learning completion rate is low. One of the reasons is the low study desire and motivation. In this work, we...
Mobile computing has many application domains. One important domain is that of mobile applications supporting collaborative work. In a collaborative work, the members of the team has to take decision or solve conflicts in project development (such as delays, changes in project schedule, taskasignment, etc.) and therefore members have to vote. Voting can be done in many ways, and in most works in the...
The linear induction machine (LIM) suffers heavily from low efficiency, due to its large air-gap length and the influence of end-effects, including transversal edge-effect and longitudinal end-effect. Worse still, its efficiency usually goes down at light load for the comparative higher copper losses caused by constant excitation current. In this paper, to improve the LIM working efficiency, a novel...
Due to heavy computational burden, the predictive step of finite control set model predictive control (FCS-MPC) is usually chosen as one. However, long predictive horizon yields in general a better closed loop performance than short horizon. In order to improve the control performance of model predictive control (MPC) and avoid long calculating time, the multistep model predictive control (MMPC) is...
We report on experimental evidence showing that the intense 391nm radiation emitted by air plasma is superradiance. Electron recollision is speculated to play an essential role in this superradiant process.
We present a nonlinear metasurface for harmonic light generation and manipulation. The beam steering functions of harmonic generations is demonstrated with frequency up to UV range, which can be further increased using high harmonic generations.
In order to study the three parameters interval number multiple attribute decision making problems, the three parameters interval number of Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS) multiple attribute decision making method are introduced, the relationship between three parameters interval number operation are set up, the Euclidean distance of the three parameters interval...
Miniature robots can't carry too many sensors for obstacle avoidance due to its small volume. In this paper, we applied the method based on low-cost local map for obstacle avoidance that uses infrared sensors and MPU6050. Firstly, we introduced the robot and its kinematic model. Secondly, proposed the criterion of robot be trapped. Thirdly, we studied the infrared data filtering with FIR filter and...
In this work, we study data shaping codes for flash memory. We first review a recently proposed direct shaping code for SLC (one bit per cell) flash memory that reduces wear by minimizing the average fraction of programmed cells. Then we describe an adaptation of this algorithm that provides data shaping for MLC (two bits per cell) flash memory. It makes use of a page- dependent cost model and is...
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