Lattice Technology

s an introduction to the subject of coded modulation in digital communication. It is designed for classroom use and for anyone wanting to learn the ideas behind this modern kind of coding. Coded modulation is signal encoding that takes into account the nature of the channel over which it is used. Traditional error correcting codes work with bits and add redundant bits in order to correct transmission errors. In coded modulation, continuous time signals and their phases and amplitudes play the major role. The coding can be seen as a patterning of these quantities. The object is still to correct errors, but more fundamentally, it is to conserve signal energy and bandwidth at a given error performance. The book divides coded modulation into three major parts. Trellis coded modulation (TCM) schemes encode the points of QAM constellations; lattice coding and set-partition techniques play major roles here. Continuous-phase modulation (CPM) codes encode the signal phase, and create constant envelope RF signals. The partial-response signaling (PRS) field includes intersymbol interference problems, signals generated by real convolution, and signals created by lowpass filtering. In addition to these topics, the book covers coding techniques of several kinds for fading channels, spread spectrum and repeat-request systems. The history of the subject is fully traced back to the formative work of Shannon in 1949. Full explanation of the basics and complete homework problems make the book ideal for self-study or classroom use.

This book brings together a collection of chapters that focus on the relationship among electrical, chemical, and mechanical properties and the study of adjusting one property through the control of another, namely, Electro-Chemo-Mechanics (ECM). The authors examine how this relationship can result in beneficial properties,

Additive manufacturing, commonly known as three-dimensional printing (3D printing), is becoming an increasingly popular method for making components that are difficult to fabricate using traditional manufacturing processes.

The Siemens Digital Industries Software development team is pleased to announce the availability of NX 1957 Build 1901 (NX 1953 Series), the latest release of NX, which brings significant significant new and enhanced functionality in all areas of the product, as well as several new design tools, to help you work more productively and efficiently to build your 3D digital twin.

The Dassault Systèmes development team is pleased to announce the availability of XFlow 2020x Refresh 1 (Build 110.08) is a powerful Computational Fluid Dynamics (CFD) software designed for engineering analysis.

Autodesk has released Maya Creative 2024.1, its pay-as-you-go edition. This release feature updates to new USD-based look dev toolset LookdevX, while animators get further updates to the Time Slider, Skin Clusters and the Proximity Wrap and Lattice deformers.