Alamouti’s space-time coding scheme for Multi-Input Multi-Output (MIMO) system has drawn much attention in 4G wireless technologies. Orthogonal frequency division multiplexing (OFDM) is a popular method for high data rate wireless transmission. OFDM may be combined with antenna arrays at the transmitter and receiver to increase the diversity gain and enhance the system capacity on time variant ...

This paper presents a new Base Layer coding scheme which introduces the rate-distortion optimization mode decision into hierarchical-fashion B-picture coding with open-loop structure. It can not only achieve high coding performance for Base Layer bit-rate point and meanwhile, but the scheme also keep the strong correlation between Base Layer and Enhancement Layer implemented by 3D subband scala...

In this paper, a fine granularity SNR scalable video coding scheme is presented. Targeted for low delay applications requiring high coding efficiency, temporal prediction is incorporated into the FGS layer of closedloop P frames with the prediction formed adaptively from enhancement layer and base layer references. This generally requires motion compensation at both enhancement layer and base l...

In this letter, we propose an enhanced method for interlayer motion prediction in scalable video coding (SVC). For inter-layer motion prediction, the use of refined motion data in the Fine Granular Scalability (FGS) layer is proposed instead of the conventional use of motion data in the base quality layer to reduce the inter-layer redundancy efficiently. Experimental results show that the propo...

The ETSI-BRAN-HIPERACCESS standard is confined to specify the radio subsystem above 11 GHz of a Point-to-Multi-Point (PMP) interoperable system consisting of the Physical (PHY) layer and the Data Link Control (DLC)/Convergence Layer (CL)which are both core network independent. The paper gives a description of the Physical Layer, which specifies the transmission scheme in order to allow interope...

human action recognition is an important problem in computer vision. one of the methods that are recently used is sparse coding. conventional sparse coding algorithms learn dictionaries and codes in an unsupervised manner and neglect class information that is available in the training set. but in this paper for solving this problem, we use a discriminative sparse code based on multi-manifolds. ...

This paper proposes a new environment for ad hoc and ubiquitous communicationt that is supported by data-driven networking processor. Te environment is based on mobile ad hoc network (MANET) which is without any centered servers. Over the MANET, there is a ubiquitous environment that realizes communication among people wherever they are. Underlying platform need satisfy requirements given by up...

Transmission of a Gaussian source over a timevarying multiple-input multiple-output (MIMO) channel is studied under strict delay constraints. Availability of a correlated side information at the receiver is assumed, whose quality, i.e., its correlation with the source signal, also varies over time. A block-fading model is considered for the states of the time-varying channel and side informatio...