VLC signal reconstruction with wavel transform in turbulence environment

qfd planning with cost consideration in fuzzy environment

در عصر حاضر که رقابت بین سازمان ها بسیار گسترش یافته است، مطالعه و طرحریزی سیستم های تولیدی و خدماتی به منظور بهینه سازی عملکرد آنها اجتناب ناپذیر می باشد. بخش عمده ای از رقابت پذیری سازمان ها نتیجه رضایتمندی مشتریان آنها است. میزان موفقیت سازمان های امروزی به تلاش آنها در جهت شناسایی خواسته ها و نیازهای مشتریان و ارضای این نیازها بستگی دارد. از طرفی کوتاه کردن زمان ارائه محصول/خدمات به مشتریان...

Signal reconstruction from Fourier transform sign information

Signal Reconstruction From The Modulus of its Fourier Transform

The problem of signal reconstruction from the magnitude of its Fourier transform arises in many applications where the wave phase is apparently lost or impractical to measure. One example of such an application that has attracted a substantial number of researchers in recent years is Coherent Diffraction Imaging (CDI). CDI is a “lens-less” technique for 2D and 3D nano-objects reconstruction wit...

Signal reconstruction from one bit of Fourier transform phase

In this paper, we present new results on the reconstruction of signals from one bit of Fourier transform phase, defined as th.e sign of the real part of the Fourier transform. Specifically, we develop a new theoretical result which shows that most twodimensioral signals can in fact be reconstructed to within a scale factor from only one bit of FT phase. Experimental results showing images recon...

Effects of noise on signal reconstruction from Fourier transform phase

The effects of noise in the given phase o oignal reconstruction from the Fourier transform ohase are studied. Specifically, the effects of different methods of sampling the degraded phase, of the number of non—zero points in the sequence, and of the noise levol on the sequence reconstruction are examined. A sampling method is developef to significantly reduce the error in the reconstructed sequ...