In rich scattering environments, wireless systems with multiple transmit and receive antennas (MIMO) offer large capacity gains. They are in general based on a parallel transmission of 1 ≤ M ≤ NT signal steams called layers (NT is the number of transmit antennas). If the channel is not known to the transmitter the best strategy would be to exploit transmit diversity for each layer. This ensures...

In the paper, we present a new approach to multi-way Blind Source Separation (BSS) and corresponding 3D tensor factorization that has many potential applications in neuroscience and multi-sensory or multidimensional data analysis, and neural sparse coding. We propose to use a set of local cost functions with flexible penalty and regularization terms whose simultaneous or sequential (one by one)...

For the performance evaluation of future wireless communication systems, such as the fourth generation wireless networks, traffic traces of realistic services are needed. Multiple description coding (MDC) is gaining a lot of interest lately and is a viable solution to provide robust video services over single or multi hop wireless networks and MDC introduces more flexibility for network coding....

SNR scalability, used in two-layer video coding, guarantees good base quality pictures at the expense of increased overall bit-rate. By understanding the inherent ine ciencies of enhancement layer coding we have developed an optimisation method called optimal coe cient adjustment in order to reduce overall bit-rates to levels consistent with single-layer operation.

Multi-Generation Mixing (MGM) is a generalized approach of Network Coding (NC) that has its improvements when applied in packet loss networks. In this paper we apply MGM network coding in networks communicating video contents. NC has shown viable improvements when applied in packet loss networks. With practical network coding (generation based network coding), packets are grouped in chunks call...

Signal-to-noise ratio (SNR) scalability has been incorporated into the MPEG-2 video-coding standard to allow for the delivery of two services with the same spatial and temporal resolution but different levels of quality. Scalable video coding has many advantages, such as its capability of coping with bandwidth variations, high flexibility and so on. However, few accurate rate control schemes fo...

In this paper, we demonstrate inter-layer prediction tools for scalable video coders. The proposed scalable coder is designed to support not only spatial, quality and temporal scalabilities, but also view scalability. In addition, we propose quad-tree inter-layer prediction tools to improve coding efficiency at enhancement layers. The proposed inter-layer prediction tools generate texture predi...

In this paper, we present a novel energy compaction method, called the selective block-wise reordering, which is used with SPIHT (SBR-SPIHT) coding for low rate video coding to enhance the coding efficiency for motion-compensated residuals. In the proposed coding system, the motion estimation and motion compensation schemes of H.263 are used to reduce the temporal redundancy. The residuals are ...

In this paper, we propose a novel architecture for scalable video coding, namely, Progressive Fine Granularity Scalable (PFGS) coding, which can provide high coding efficiency along with good bandwidth adaptation and error recovery properties. Unlike the Fine Granularity Scalable (FGS) coding in MPEG-4 proposal, some of the enhancement layers in a current frame are predicted from a high quality...