We study the performance of joint source and channel codes designed to minimize end-to-end distortion over a Rayleigh fading channel. We consider two joint code designs. The first joint code uses a sequential design: a standard vector quantizer (VQ) source code is designed for a perfect channel (noiseless and distortionless) and then an RCPC channel code is optimized relative to the VQ and the ...

flow passing through lateral intakes and channel junctions is turbulent. sediment flow and bed forms areaffected by these flow patterns and vice versa. in this research, a laboratory study was carried out toexplore a possible method for sediment control for a set of submerged vanes and a single spur dikesimultaneously. since a larger portion of the near-bed flow was diverted, the intake receive...

introduction: we have recently reported the presence of two potassium currents with 598 and 368 ps conductance in the rough endoplasmic reticulum (rer) membrane. the 598 ps channel was voltage dependent and atp sensitive. however, the 368 ps channel was rarely observed and its identity remained obscure. since cationic channels in intracellular organelles such as mitochondria and rer play import...

Introduction. We deal with DNA word design problem, i.e. the construction of codes of DNA strings under some biological combinatorial constraints. The point of view taken here is that of channel coding theory, meaning that we try to explain DNA coding by identifying a suitable channel and a suitable decoding mechanism. The coding theoretic framework used is based on the rather general concept o...

We consider how Fibre Channel switches can be cascaded to form a Fibre Channel fabric. We begin with an analytical model of topology performance that provides a theoretical upper bound on fabric per$ormance and a method for the practical evaluation of fabric topologies. We then consider the prevention of buffer-cycle deadlock in Fibre Channel networks. We show that though some topologies implic...

We propose a systematic controller design method that provides integral-action in linear time-invariant two-channel decentralized control systems. Each channel of the plant is single-input–single-output, with any number of poles at the origin but no other poles in the instability region. An explicit parametrization of all decentralized stabilizing controllers incorporating the integral-action r...

Although the multi-channel shopper has recently become a dominant consumer type, firms are still struggling with consciously designing their multi-channel service mix. In this paper, a design method based on QFD (Quality Function Deployment) is introduced and tested for defining eservices that have to function in a multi-channel context. Within a design research perspective, a structured field ...

We propose LDPC code designs for the half-duplex relay channel. Our designs are derived from the information theoretic random coding scheme for decode-and-forward relaying. An important advantage of our scheme is that it is built entirely of single-user codes. The optimization of relay LDPC code profiles presents unique challenges, which are met by modifying the density evolution algorithm by i...