Near-Capacity Joint Source-Channel Coding for Adaptive Video Transmission over Rayleigh Fading Channel
نویسندگان
چکیده
In this paper we propose an adaptive Joint Source and Channel Coding (JSCC) associated with adequate modulation algorithm to provide a near channel capacity video transmission rate to achieve better system performance. In the proposed algorithm we apply MPEG-2 video coding scheme, and turbo channel coding technique as well as BPSK/QPSK for modulation method. Rates assigned to MPEG-2 source coding and turbo channel coding schemes are based on the feedback information from Performance Control Unit (PCU) based on channel capacity limitation. Therefore, an improved performance for the suggest system design is promised over Rayleigh fading channel conditions. Keywords—Joint Source-Channel Coding (JSCC); MPEG2; Turbo Code; Markov State; Performance Control Unit (PCU)
منابع مشابه
Adaptive Video Transmission over Wireless MIMO System
There has been an interesting issue in multimedia communications over wireless system in recent years. In order to achieve high data rate wireless multimedia communications, spatial multiplexing technique (Foschini & Gans, 1998; Wolniansky et al. 1998) has recently developed as one of the most noteworthy techniques as multiple-input and multiple-output (MIMO) systems. If the channel state infor...
متن کاملWireless Channel Modeling Based on Finite-state Markov Model
In this paper, a wireless channel is viewed as a heterogeneous network in the time domain, and an adaptive video transmission scheme for H.264 scalable video over wireless channels modeled as a finite-state Markov chain processes is presented. In order to investigate the robustness of adaptive video transmission for H.264 scalable video over wireless channels, statistical channel models can be ...
متن کاملReliable Video Transmission over Fading Channels via Channel State Estimation
Transmission of continuous media such as video over time-varying wireless communication channels can benefit from the use of adaptation techniques in both source and channel coding. An adaptive feedback-based wireless video transmission scheme is investigated in this research with special emphasis on feedback-based adaptation. To be more specific, an interactive adaptive transmission scheme is ...
متن کاملJoint source channel coding for non-ergodic channels: the distortion signal-to-noise ratio (SNR) exponent perspective
Joint Source Channel Coding for Non-Ergodic Channels: The Distortion Signal-to-Noise Ratio (SNR) Exponent Perspective. (May 2008) Kapil Bhattad, B.Tech., Indian Institute of Technology, Madras Chair of Advisory Committee: Dr. Krishna Narayanan We study the problem of communicating a discrete time analog source over a channel such that the resulting distortion is minimized. For ergodic channels,...
متن کاملTracking performance of incremental LMS algorithm over adaptive distributed sensor networks
in this paper we focus on the tracking performance of incremental adaptive LMS algorithm in an adaptive network. For this reason we consider the unknown weight vector to be a time varying sequence. First we analyze the performance of network in tracking a time varying weight vector and then we explain the estimation of Rayleigh fading channel through a random walk model. Closed form relations a...
متن کامل