A Practical Transmission System Based on the Human Visual Model for Satellite Channels
نویسندگان
چکیده
This paper presents a practical architecture for joint source-channel coding of human visual model based video transmission over satellite channel. Perceptual distortion model justnoticeable-distortion (JND) is applied to improve the subjective quality of compressed videos. 3-D wavelet decomposition can remove spatial and temporal redundancy and provide scalability of video quality. In order to conceal the errors occurred under bad channel conditions, a novel slicing method and a joint source channel coding scenario that combines RCPC with CRC and utilizes the distortion information to allocate convolutional coding rates are proposed. A new performance index based on JND is proposed and used to evaluate the overall performance at different signal to noise ratios (SNR). Our system uses OQPSK modulation scheme.
منابع مشابه
Temperature-dependent model of human cardiac sodium channel
Cardiac sodium channels are integral membrane proteins whose structure is not known at atomic level yet and their molecular kinetics is still being studied through mathematical modeling. This study has focused on adapting an existing model of cardiac Na channel to analyze molecular kinetics of channels at 9-37°C. Irvine et al developed a Markov model for Na channel using Neuronal Network Model ...
متن کاملTemperature-dependent model of human cardiac sodium channel
Cardiac sodium channels are integral membrane proteins whose structure is not known at atomic level yet and their molecular kinetics is still being studied through mathematical modeling. This study has focused on adapting an existing model of cardiac Na channel to analyze molecular kinetics of channels at 9-37°C. Irvine et al developed a Markov model for Na channel using Neuronal Network Model ...
متن کاملDesigning a model to measure the performance of Persian language satellite and television networks in the lifestyle after the Corona crisis
Aim and Background: Our country is one of the most vulnerable countries in terms of suffering natural disasters in such a way that during the 20th century, the statistics of human and material losses resulting from incidents have placed Iran among the top ten countries in the world in terms of disaster and vulnerability; on the other hand, considering the role of the media in the representation...
متن کاملExtension of the Coverage Region of Multiple Access Channels by Using a Relay
From practical and theoretical viewpoints, performance analysis of communication systems by using information-theoretic results is important. In this paper, based on our previous work on Multiple Access Channel (MAC) and Multiple Access Relay Channel (MARC), we analyze the impact of a relay on the fundamental wireless communications concept, i.e., coverage region of MARC, as a basic model for u...
متن کاملReconnoitering the effective Channels of Monetary Transmission Mechanism in Iran Using a Dynamic Stochastic General Equilibrium Model
The purpose of the present research is to investigate the effective channels of the monetary transmission mechanism in Iran. To do so, we devised a New Keynesian Dynamic Stochastic General Equilibrium Model. In our model, the different types of nominal rigidities are introduced beside all the related structural equations, which are extracted and linearized around a steady state point. Furthermo...
متن کامل