نتایج جستجو برای: adaptive technique

تعداد نتایج: 795670  

Journal: :EURASIP J. Adv. Sig. Proc. 2006
Yaron Seliktar Douglas B. Williams E. Jeff Holder

Mainbeam jamming poses a particularly difficult challenge for conventional monopulse radars. In such cases spatially adaptive processing provides some interference suppression when the target and jammer are not exactly coaligned. However, as the target angle approaches that of the jammer, mitigation performance is increasingly hampered and distortions are introduced into the resulting beam patt...

2014
Pedro D. Pestana Joshua D. Reiss

This work presents an algorithm that is able to achieve novel spatialization effects on multitrack audio signals. It relies on a crossadaptive framework that dynamically maps the azimuth positions of each track’s time-frequency bins with the goal of reducing masking between source signals by dynamically separating them across space. The outputs of this system are compared to traditional panning...

1990
Ricardo A. Baeza-Yates

We present a new overrow technique for B-trees. The technique is a hybrid of partial expansions and unbalanced splits. This technique is asymmetric and adaptive. Considering a growing le (only insertions), the storage utilization is 77% for random keys, 70% for sorted keys, and over 75% for non-uniform distributed keys. Similar results are achieved when we have deletions mixed with insertions. ...

1998
Kien A. Hua Jung-Hwan Oh Khanh Vu

Periodic broadcast and scheduled multicast have been shown to be very effective in reducing the demand on server bandwidth. While periodic broadcast is ideally suited for very popular videos, scheduled multicast is better for less demanded objects. Work has also been done to show that a hybrid of these techniques offers the best performance. Existing hybrid techniques, however, assume that the ...

2001
Sang-Kwon Lee Hee-Chul Yun Joonwon Lee Seung Ryoul Maeng

Though shared virtual memory (SVM) systems promise low cost solutions for high performance computing, they suffer from long memory latencies. These latencies are usually caused by repetitive invalidations on shared data. Since shared data are accessed through synchronizations and the patterns by which threads synchronizes are repetitive, a prefetching scheme based on such repetitiveness would r...

2001
A. S. de la Vega Antônio Carlos M. de Queiroz Paulo S. R. Diniz

A CMOS switched-current adaptive filter architecture is presented. It is basically a finite impulse response (FIR) transversal filter adapted by using the Least-Mean-Square (LMS) adaptation algorithm. The design is based on delay and multiply-accumulator blocks. The implemented system can be switched to work either as an adaptive filter or as an FIR programmable filter. The adaptation signal ca...

2006
Sri Fatimah Tjong Nasreddine Hallam Michael Hartley

This paper discusses the proposed technique for analysis and production of English grammar rules by using the structure and meaning of human language. We come up with ProRules grammar that is based on grammar adaptation and compilation. ProRules serves as a basis scheme in processing the natural language requirements specifications. This paper will further outline the ideal algorithms for lexic...

2004
Wonchan Kim

In this paper, an image resolution enhancing technique is described. It is based on extracting 1-dimensional characteristic curves from subsequent frames and sub-pixel displacement values. Through sub-pixel mapping and adaptive interpolation, high-resolution image can be obtained from several lowresolution image frames. This 1-dimensional algorithm is simple and cost-effective, and can be easil...

In this paper, a new open-switch fault diagnosis method is proposed for the six-phase AC-DC converter based on the difference between the phase current and the corresponding reference using an adaptive threshold. The open-switch faults are detected without any additional equipment and complicated calculations, since the proposed fault detection method is integrated with the controller required ...

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