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This paper presents the Intrinsic Mode Function Time Delay Method (IMFTDM) which is based on Hilbert Huang Transform (HHT) and its application in beamforming. The IMFTDM can delay the broadband Intrinsic Mode Function (IMF) by arbitrary time accurately. And in this work, the IMFTDM is performed using the simulated and real data in beamforming to test its performance. The results show that it can improve...
In this paper, a CPW-fed ultra-wideband (UWB) antenna with dual band-notched characteristics is presented. By inserting a C-shaped slot to the radiating patch, and embedding a pair of inverted L-shaped slots into the ground plane, the 3.5/5.5 GHz dual band-notched characteristics are achieved, respectively. The proposed antenna was successfully simulated, fabricated and measured. The simulated results...
Continuous-time Delta-Sigma modulators are able to operate at higher frequencies than their discrete-time counterparts. However, they suffer more severely from non-idealities such as clock jitter. A method for measuring this clock jitter has been proposed. Moreover, the effect of the non-ideality are explained and a continuous-time to discrete-time conversion method is presented in order to aid in...
Wide-area distribution raises significant performance problems for traditional query processing techniques as data access becomes less predictable due to link congestion, load imbalances, and temporary outages. Non-blocking joining query execution is a promising approach to coping with unpredictability in such environments because of reactively scheduling background processing. Classical non-blocking...
In data streams or Web scenario at highly variable and unpredictable rates, most fast join algorithms to date rely upon shifting to external join stage as soon as possible when blocked in order to enhance efficiency. But they have trouble with the following issues: the limit of external join and practical executing time. Classical progressive two-way joining technique based on hash, however, fail...
Clustered superscalar is an attractive alternative to large monolithic superscalar, and point-to-point (p-to-p) network is often used as inter-cluster communication networks (ICCN) to transfer dependent values between clusters. This new class of networks has demands and characteristics different from traditional networks. In order to pursue high performance, it should be highly coupled with the microarchitecture...
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