Content adaptive network aware joint optimization of wireless video transmission

Abstract

A content adaptive, network aware approach for joint optimization of wireless video transmission is presented in this article. The joint system optimization approach has been developed in the framework of the IST PHOENIX project (www.ist-phoenix.org).After a description of the considered crosslayer approach and of the information to be exchanged among the system component blocks, the concept of "JSCC/D controllers" is introduced. Results obtained through the demonstrator realized as proof-of-concept for the described paradigm are then shown, confirming the validity of the described joint optimization approach.

Cross-layer architecture for scalable video transmission in wireless network

“…While the PHOENIX architecture proposed in [10,8] is general to be used together with several radios and video codecs, we would like to present some special aspects related to scalable video transmission utilizing the proposed architecture. The PHOENIX architecture can be also used with scalable video but due to different bitstream structure, some cross-layer mechanisms are realized…”

Performance evaluation of application layer joint coding for video transmission with smartphones over terrestrial/satellite emergency networks

“…A practically implemented solution has been presented in [12] but it is based on a cross-layer approach (i.e., interaction with the physical layer is needed) and it is not suited to be applied when the video source is a smartphone platform.…”

Reliable packet type estimation via joint protocol-channel decoding

“…Soft information, i.e., bit reliability information, is assumed available at the considered layer. It may either come from soft-output channel decoders at physical layer [2,6] possibly combined with protocol layer permeability mechanisms [8,12,15], which allow the transmission of soft information from the physical layer through the upper layers of the protocol stack.…”