Scalable H.264 Wireless Video Transmission over MIMO-OFDM Channels
نویسندگان
چکیده
A cross-layer optimization scheme is proposed for scalable video transmission over wireless Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems. The scalable video coding (SVC) extension of H.264/AVC is used for video source coding. The proposed cross-layer optimization scheme jointly optimizes application layer parameters and physical layer parameters. The objective is to minimize the expected video distortion at the receiver. Two methods have been developed for the estimation of video distortion at the receiver, which is essential for the cross-layer optimization. In addition, two different priority mappings of the SVC scalable layers are considered. Experimental results are provided and conclusions are drawn.
منابع مشابه
Video Transmission using Combined Scalability Video Coding over MIMO-OFDM Systems
The needs of efficient bandwidth utilization and method to handle bandwidth fluctuation condition of wireless channel have become fundamental problems in video transmission. This research proposed Combined Scalable Video Coding (CSVC) that refers to Joint Scalable Video Model (JSVM), i.e. development of video coding H.264/AVC by exploiting scalable combination method using Medium Grain Scalabil...
متن کاملScalable H.264/avc Video Transmission in Mimo System with Content Aware Packet Importance Ordering
In this paper, we propose a content-aware scalable video transmission scheme over time-varying multiple-input multi-output (MIMO) wireless channels. At transmitter, distortion is calculated based on both EL truncation and drift. We then order the packets according to their importance scores. Each packet has an importance score calculated from the expected distortion if the packet is lost during...
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 کاملFpga Implementation of Mimo S Ystems for Ensuring
Existing multimedia software in e-learning do not provide par excellence multimedia data service to the common user; hence e-learning services are still short of intelligence and sophisticated end user tools for visualization and retrieval. Network QoS (Quality of Servcie) becomes critical with precision requiring low motion video streaming, over wireless scarce resource networks having fluctua...
متن کاملA New Unequal Error Protection Technique Based on the Mutual Information of the MPEG-4 Video Frames over Wireless Networks
The performance of video transmission over wireless channels is limited by the channel noise. Thus many error resilience tools have been incorporated into the MPEG-4 video compression method. In addition to these tools, the unequal error protection (UEP) technique has been proposed to protect the different parts in an MPEG-4 video packet with different channel coding rates based on the rate...
متن کامل