نتایج جستجو برای: digital audio broadcasting
تعداد نتایج: 386372 فیلتر نتایج به سال:
In this paper, by using MATLAB/Simullink software, Xilinx System Generator, Xilinx Alliance tools, Xilinx XSE & ISE and Modelsim XE software, a real-time transceiver platform is built up to analyze and verify the effectiveness and usability of the implemented FPGA-based DAB (Digital Audio Broadcasting) channel decoder. This hardware-level testing platform is completely conforming to DAB specifi...
This is a special issue published in volume 2003 of " EURASIP Journal on Applied Signal Processing. " All articles are open access articles distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Interest in digital processing of audio signals has been re-invigorated b...
Digital video and audio multimedia systems will rapidly take the place of existing analog systems in the next millennium's radio and television broadcasts. Current initiatives in digital radio will soon provide near-CD quality radio channels in many countries. However, due to the very nature of their broadcasting architecture, user interactivity and exibility is limited. We demonstrate an archi...
Orthogonal Frequency-Division Multiplexing (OFDM) is a spectrally efficient multicarrier modulation scheme, which is employed in the most advanced high-speed wireless communication systems, such as Digital Video Broadcasting (DVB) or Long-Term Evolution (LTE). However, one of its biggest shortcomings is that it produces a signal with a high Peak-to-Average Power Ratio (PAPR), which is undesirab...
We present a new approach for classifying mpeg-2 video sequences as ‘cartoon’ or ‘non-cartoon’ by analyzing specific video and audio features of consecutive frames in real-time. This is part of the well-known video-genreclassification problem, where popular TV-broadcast genres like cartoon, commercial, music, news and sports are studied. Such applications have also been discussed in the context...
In most source coded bit streams certain bits can be much more sensitive to transmission errors than others. Unequal error protection (UEP) offers a mechanism for matching error protection capability to sensitivity to transmission errors. A UEP system typically has the same average transmission rate as a corresponding equal error protection (EEP) system but offers an improved perceived signal q...
The Radix-2 decimation-in-time Fast Fourier Transform is the simplest and most common form of the Cooley–Tukey algorithm. The FFT is one of the most widely used digital signal processing algorithms. It is used to compute the Discrete Fourier Transform and its inverse. It is widely used in noise reduction, global motion estimation and orthogonalfrequency-division-multiplexing systems such as wir...
Orthogonal Frequency Division Multiplexing (OFDM) is the digital multicarrier modulation scheme for high speed communication systems. One of the major problems in OFDM is the occurrence of high Peak to Average Power Ratio (PAPR). Due to high PAPR the signal leads to out-of-band (OBO) distortion and increase in Bit Error Rate (BER). The reduction in PAPR is desirable in order to obtain the power...
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