نتایج جستجو برای: locked loop

تعداد نتایج: 142892  

2002
Athanasios Dedes Pietro Slavich

We study the O(αtαs+αt ) two–loop corrections to the minimization conditions of the MSSM effective potential, providing compact analytical formulae for the Higgs tadpoles. We connect these results with the renormalization group running of the MSSM parameters from the grand unification scale down to the weak scale, and discuss the corrections to the Higgs mixing parameter μ and to the running CP...

2008
Steven Callander Benjamin Fried

I study a model of dynamic policy making in which citizens do not have complete knowledge of how policies are mapped into outcomes. Citizens are able to order policies in the single-dimensional space according to the outcomes they are expected to produce but not according to the realized outcomes they do produce. They learn about the mapping through repeated elections as policies are implemente...

Journal: :IEICE Electronic Express 2014
Toshifumi Moriyama Makoto Satake

In this letter, the phase compensation method to remove an interfering phase in Pi-SAR-X2 POLSAR data is proposed. This phase is induced when a steep surface is observed by the H and V polarization antennas which are vertically placed. The proposed method removes the phase errors by using the elevation data which is acquired with the slave-V antenna displaced in the cross-track direction (for i...

2008
Frederik Vandeputte Lieven Eeckhout

It is well known that a program execution exhibits time-varying behavior, i.e., a program typically goes through a number of phases during its execution with each phase exhibiting relatively homogeneous behavior within a phase and distinct behavior across phases. In fact, several recent research studies have been exploiting this time-varying behavior for various purposes. This paper proposes ph...

Journal: :CoRR 2013
Joonsuk Kim

We present a phase-aligned space-time coding scheme that expands the original Alamouti codeword to three or four transmit antennas (Nt = 3 or 4) with phase alignment. With 1 ∼ 2 bits feedback for the phase information, the fundamental performance penalty of 10log10(Nt) dB of orthogonal space-time coding compared to the optimum beamforming is reduced by 1 dB (for Nt = 3) or 2 dB (for Nt = 4) on ...

2002
R. L. Cruess J. R. Dumont

For the sake of simplicity, fracture healing can be divided into phases, but it must be stressed that events described in one phase persist into the next and that events that occur in subsequent phases begin in an earlier phase (Fig. 3-1). The arbitrary phase division makes the overall picture clearer. These events have been described through the years in investigative reports and review articl...

Journal: :Applied Mathematics and Computation 2008
Bin He Weiguo Rui Shaolin Li Chan Chen

In this paper, a modified form of generalized Degasperis–Procesi equation is studied by using the bifurcation theory and by the method of phase portraits analysis. Some bounded travelling waves (loop solitons, peakons, solitary waves and periodic waves) are found. Under different parameter conditions, exact parametric representations of the above travelling waves in explicit form and in implici...

2002
Michael C. Ogilvie

At finite temperature, there is an apparent conflict between Abelian projection and critical universality. For example, should the deconfinement transition of an SU(2) gauge theory projected to U(1) lie in the Z(2) universality class of the parent SU(2) theory or in the U(1) universality class? I prove that the projected theory lies in the universality class of the parent gauge theory. The mech...

Journal: :IEEE Journal on Selected Areas in Communications 1996
Bas W. 't. Hart Richard D. J. van Nee Ramjee Prasad

The influence of code synchronization errors on the performance of direct-sequence spread-spectrum (DS/SS) communication systems is investigated. Insight is gained in the degradation of some basic performance parameters due to the tracking bias of a noncoherent delay lock loop (DLL). The performance parameters investigated are the bit-error probability, throughput and delay. Numerical results s...

Journal: :IEEE Trans. Information Theory 1974
Alan S. Willsky

The practical implementation of the infinite-dimensional optimal estimation results presented in Part I of this series is considered. Several techniques are described in detail. Included among these is the so-called “assumed density” approximation technique. Finite-dimensional suboptimal filtering equations based on this method are derived for several of the phase-tracking/demodulation problems...

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