Theory of Code Division Multiple Access Communication or Chemists Companion

Theory of Code Division Multiple Access Communication

Author: Kamil Sh Zigangirov

A comprehensive introduction to CDMA theory and application

Code division multiple access (CDMA) communication is rapidly replacing time- and frequency-division methods as the cornerstone of wireless communication and mobile radio. Theory of Code Division Multiple Access Communication provides a lucid introduction and overview of CDMA concepts and methods for both the professional and the advanced student.

Emphasizing the role CDMA has played in the development of wireless communication and cellular mobile radio systems, the author leads you through the basic concepts of mobile radio systems and considers the different principles of multiple access–time division, frequency division, and code division. He then analyzes three major CDMA systems–direct sequence (DS) CDMA systems, frequency hopped (FH) CDMA systems, and pulse position hopped (PPH) CDMA systems. Other topics covered include:

• Spread spectrum (SS) technology

• Forward error control coding

• CDMA communication on fading channels

• Pseudorandom signals

• Information theory in relation to CDMA communication

• CDMA cellular networks

Complete with useful appendices providing analyses of the moments of CDMA system decision statistics, Theory of Code Division Multiple Access Communication is a ready reference for every engineer seeking an understanding of the history and concepts of this key communications technology.

Look this: Leading From the Inside Out or Global Taiwan

Chemist's Companion: A Handbook of Practical Data, Techniques, and References

Author: Arnold J Gordon

Here in one source is a wide variety of practical, everyday information often required by chemists but seldom found together, if at all, in the standard handbooks, data collections, manuals, and other usual sources. Discussing physical, chemical, and mechanical properties of substances and systems, the authors answer such questions as:

• How do I test for and destroy peroxides in different solvents and what is the best way to purify such solvents?
• What are the structure, physical properties, and recent references to the use of common-name solvents and solvent aids such as the "Skellysolves," "Cellosolves," "Crownanes," and "Glymes"?
• What is the utility of a particular molecular sieve, or permeation gel, or epoxy cement, or liquid crystal, and where do I buy them and find references to their application?

The book is divided into nine chapters and covers properties of atoms and molecules, spectroscopy, photochemistry, chromatography, kinetics and thermodynamics, various experimental techniques, and mathematical and numerical information, including the definitions, values, and usage rules of the newly adopted International System of Units (SI Units). A section on statistical treatment of data which provides an actual least-squares computer program is also included. In the spectroscopy chapter, very extensive and up-to-date collections of spectral correlation data are presented for ir, uv-vis, optical rotation, nmr, and mass spectra, along with data on esr and nqr spectroscopy. Also included is a variety of hard-to-classify but frequently sought information, such as names and addresses of microanalysis companies and chemistry publishers, descriptions andcommercial sources of atomic and molecular models, and safety data for hazardous chemicals. More than 500 key references are also included, most of which are recent. There are important hints and definitions associated with the art as well as the state of the art for the appropriate subjects. Also found throughout the book are about 250 suppliers and directions for obtaining special booklets or other material.

Containing a wealth of useful information, The Chemist's Companion will be an indispensable guide for students and professional chemists in nearly all the chemical disciplines. In addition, it will provide for the teacher and student an unusual adjunct for use in a broad cross-section of chemistry courses.

Table of Contents:

Properties of Molecular Systems
I. Properties of Solvents and Common Liquids
II. Azeotropic Data
III. Empirical Boiling Point-Pressure Relationships
IV. Properties of Selected Gases
V. Properties of Representative Fused Salt Systems
VI. Structure and Properties of Naturally Occurring α-Amino Acids
VII. Properties and Applications of Liquid Crystals
VIII. Prototropic Tautomerism
IX. Acids and Bases
Properties of Atoms and Bonds
I. Properties of the Elements
II. Table of Isotopes
III. Selected Bond Lengths
IV. Effective van der Waals Radii
V. Bond Angles and Hybridization
VI. Selected Bond Strengths
VII. Force Constants
VIII. Torsion and Inversion Barriers
IX. Bond and Group Dipole Moments
X. Aromaticity
Kinetics and Energetics
I. Activation Parameters and Kinetics of Selected Reactions
II. Linear Free Energy Relationships
III. Conformational Free Energy Values
IV. Free Energy-Composition Chart
Spectroscopy
I. The Electromagnetic Spectrum
II. Solvents and Other Media for Spectral Measurements
III. Optical Materials for Spectroscopy and Photochemistry
IV. Vibration Spectra
V. Electronic Absorption and Emission Spectra: UV and Vis
VI. Optical Activity and Optical Rotation
VII. Mass Spectrometry
VIII. Nuclear Magnetic Resonance Spectroscopy
IX. Electron Spin Resonance Spectroscopy
X. Nuclear Quadrupole Resonance Spectroscopy
XI. Bibliography of Spectral Data Compilations
Photochemistry
I. Electronic Energy State Diagram
II. Excited State Energy Transfer: Sensitizers and Quenchers
III. Photochemistry Light Sources and Equipment
IV. Chemical Actinometry:Quantum Yield
V. Suppliers
VI. References
Chromatography
I. Fundamental Types of Chromatography and Basic Definitions
II. Adsorption Chromatography
III. Paper Chromatography
IV. Column and Thin Layer Partition Chromatography
V. Ion-Exchange Chromatography
VI. Gel Filtration and Gel Permeation Chromatography
VII. Automated Liquid Chromatography
VIII. Electrophoresis
IX. Vapor Phase Chromatography
X. Chromatography Supply Directory
XI. References
Experimental Techniques
I. Properties of Laboratory Materials
II. Standard Glassware Cleaning Solutions
III. Purification of Common Solvents
IV. Detection of Peroxides and Their Removal
V. Chemical Methods for Deoxygenating Gases and Liquids
VI. Simple Chemical Methods for Detecting Specific Gases
VII. Simple Preparations of Some Dry Gases
VIII. Common Solvents for Crystallization
IX. Solvents for Extraction of Aqueous Solutions
X. Drying Agents
XI. Solvents and Baths for Heating and Cooling
XII. Molecular Weight Determination
Mathematical and Numerical Information
I. Approved International Units System and General Constants
II. Useful Conversion Factors
III. Wavelength-Wavenumber Conversion Table
IV. Multiples of Element and Group Weights
V. Molecular Symmetry: Definitions and Common Systems
VI. Character Tables for Common Symmetry Groups
VII. Computer Programs
VIII. Statistical Treatment of Data
Miscellaneous
I. Important Chemistry Reference Sources: A Bibliography
II. Atomic and Molecular Models
III. Addresses of Publishers that Deal With Chemistry
IV. Combustion Microanalysis and Other Custom Analytical Services
V. Hazards of Common Chemicals
Suppliers Index
Subject Index