Power Management in Mobile Devices

Elsevier
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Sealed Lead Acid...Nickel Cadmium...Lithium Ion...
How do you balance battery life with performance and cost?
This book shows you how!


Now that "mobile" has become the standard, the consumer not only expects mobility but demands power longevity in wireless devices. As more and more features, computing power, and memory are packed into mobile devices such as iPods, cell phones, and cameras, there is a large and growing gap between what devices can do and the amount of energy engineers can deliver. In fact, the main limiting factor in many portable designs is not hardware or software, but instead how much power can be delivered to the device. This book describes various design approaches to reduce the amount of power a circuit consumes and techniques to effectively manage the available power.

Power Management Advice On:
•Low Power Packaging Techniques
•Power and Clock Gating
•Energy Efficient Compilers
•Various Display Technologies
•Linear vs. Switched Regulators
•Software Techniques and Intelligent Algorithms

* Addresses power versus performance that each newly developed mobile device faces
* Robust case studies drawn from the author's 30 plus years of extensive real world experience are included
* Both hardware and software are discussed concerning their roles in power
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Additional Information

Publisher
Elsevier
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Published on
Apr 1, 2011
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Pages
336
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ISBN
9780080556406
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Language
English
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Genres
Technology & Engineering / Electronics / General
Technology & Engineering / Mobile & Wireless Communications
Technology & Engineering / Power Resources / Electrical
Technology & Engineering / Power Resources / General
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Content Protection
This content is DRM protected.
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Available on Android devices
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Eligible for Family Library

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This textbook addresses the main topics associated with mobile computing and wireless networking at a level that enables the students to develop a fundamental understanding of the technical issues involved in this new and fast emerging discipline. The book first examines the basics of wireless technologies and computer communications that form the essential infrastructure required for building knowledge in the area of mobile computations involving the study of invocation mechanisms at the client end, the underlying wireless communication, and the corresponding server-side technologies. The book includes coverage of development of mobile cellular systems, protocol design for mobile networks, special issues involved in the mobility management of cellular system users, realization and applications of mobile ad hoc networks (MANETs), design and operation of sensor networks, special constraints and requirements of mobile operating systems, and development of mobile computing applications. Finally, an example application of the mobile computing infrastructure to M-commerce is described in the concluding chapter of the book. This book is suitable as an introductory text for a one-semester course in mobile computing for the undergraduate students of Computer Science and Engineering, Information Technology, Electronics and Communication Engineering, Master of Computer Applications (MCA), and the undergraduate and postgraduate science courses in computer science and Information Technology. KEY FEATURES : Provides unified coverage of mobile computing and communication aspects Discusses the mobile application development, mobile operating systems and mobile databases as part of the material devoted to mobile computing Incorporates a survey of mobile operating systems and the latest developments such as the Android operating system
Packed with information, authoritative, up to date, covering all major topics - and written in plain English - Telecom 101 Telecommunications Reference Book is an invaluable textbook and day-to-day reference on telecommunications.

Telecom 101 covers the core knowledge set required in the telecommunications business today: the technologies, the players, the products and services, jargon and buzzwords, and most importantly, the underlying ideas... and how it all fits together.

The course materials for Teracom’s famous Course 101 Telecom, Datacom and Networking for Non-Engineers, augmented with additional topics and bound in this one volume bring you consistency, completeness and unbeatable value.

Our approach can be summed up with a simple philosophy: Start at the beginning.  Progress in a logical order.  Build one concept on top of another.  Finish at the end.  Avoid jargon.  Speak in plain English.

Bust the buzzwords, demystify jargon, and cut through doubletalk!
Fill gaps and build a solid base of structured knowledge.
Understand how everything fits together.
... knowledge and understanding that lasts a lifetime.

Ideal for anyone needing a book covering all major topics in telecom, data communications, IP and networking… in plain English.

A wealth of clear, concise, organized knowledge, impossible to find in one place anywhere else!

Join thousands of satisfied customers.  Get your copy today!

7" x 9" softcover textbook • 488 pages
4th edition • Published March 2016
print ISBN 9781894887038
eBook ISBN 9781894887786
Print quantities are limited. Order today to avoid disappointment.

Your Go-To Telecommunications Resource

Covering all major topics, we begin with the Public Switched Telephone Network (PSTN), then
• progress in a logical order, building one concept on top of another,
• from voice and data fundamentals to digital, packets, IP and Ethernet, VoIP,
• fiber and wireless, DSL and cable, routers and networks, MPLS, ISPs and CDNs,
• and finish with the Brave New World of IP Telecom, where voice, data and video are the same thing.

• An invaluable day-to-day reference handbook

• Learn and retain more reading a hard copy, professionally printed and bound

• Up-to-date: published 2016

• Allows you to study and review topics before attending a course

• An economical and convenient way to self-study
... these are the materials to an instructor-led course that costs $1395 to attend.

• The Certification Study Guide for the prestigious Telecommunications Certification Organization (TCO) Certified Telecommunications Analyst (CTA) telecommunications certification.

Value Pricing

Written by our top instructor, Eric Coll, M.Eng., Telecom 101 contain 35 years of knowledge and learning distilled and organized into an invaluable study guide and practical day-to-day reference for non-engineers.

Looking through the chapter list and detailed outline below, you'll see that many chapters of Telecom 101 are like self-contained reference books on specific topics, like the PSTN, IP, LANs, MPLS and cellular.

You can get all of these topics bound in one volume for one low price.

Compare this to hunting down and paying for multiple books by different authors that may or may not cover what you need to know- and you'll agree this is a very attractive deal.

Career- and productivity-enhancing training... an investment that will be repaid many times over.


Chapter List

Telecom 101 is composed of three parts: Fundamentals of Telecommunications, Telecommunications Technologies, and the IP Telecommunications Network.

PART I  FUNDAMENTALS OF TELECOMMUNICATIONS

1 INTRODUCTION
2 FUNDAMENTALS OF TELEPHONY
3 SWITCHING
4 THE TELECOMMUNICATIONS INDUSTRY

We begin with the fundamentals of telephony and the telephone network – the basis for understanding everything else.

First is the Public Switched Telephone Network (PSTN): loops and trunks, circuit-switching, analog, the voiceband and Plain Ordinary Telephone Service (POTS). Plus, new for the fourth edition: Voice over IP (VoIP) is now part of the fundamentals.

Next is switching, starting with traditional telephone switches: Centrex, PBX and PBX trunks, and how that relates to the newer ideas of softswitches, Hosted PBX and SIP trunking.

This part is completed with a chapter on the telecommunications business: Local Exchange Carriers and Inter-Exchange Carriers, ILECs and CLECs, the main players and how carriers interconnect.

PART II TELECOMMUNICATIONS TECHNOLOGIES

5 DIGITAL
6 TRANSMISSION SYSTEMS
7 THE NETWORK CLOUD AND SERVICE PROVISIONING
8 FIBER OPTICS
9 DSL AND CABLE MODEMS: LAST MILE ON COPPER
10 WIRELESS

The second part is devoted to telecommunications technologies: the actual methods used to implement circuits and services.

We begin with digital: what digital is, how voice and video are digitized, and how digitized information is actually transmitted.

The next chapter is transmission systems: the high-capacity systems developed to carry many users’ traffic. This starts with the installed base of channelized systems, the hierarchy of DS0, DS1 and DS3 rates and an overview of T1, T3, SONET and ISDN.

Then our attention turns to the new generation packetized systems, introducing the concepts of overbooking and bandwidth on demand instead of channels, how this is implemented with frames and packets, coexistence and transition from channels to packets.

Then we understand the “Network Cloud”, how services are actually implemented, the three basic types of services and the equipment used for each.

Completing this part are chapters on the technologies used to implement the network:

Fiber Optics, including fundamentals of fiber, wave-division multiplexing, the network core, Metropolitan Area Networks, Passive Optical Networks and fiber to the premise.

Last Mile on Copper: DSL and Cable Modems, including fundamentals of modems, DSLAMs, VDSL, broadband and cable modems.

Wireless, concentrating on mobile communications: cellular and mobility concepts, the technologies TDMA, CDMA and OFDM, the generations from 1G to 4G, and the systems GSM, UMTS, 1X and LTE. This chapter is completed with WiFi and satellite.

PART III THE IP PACKET-SWITCHED TELECOM NETWORK (IP-PSTN)

11 "DATA" COMMUNICATIONS CONCEPTS
12 CODING, FRAMES AND PACKETS
13 THE OSI LAYERS AND PROTOCOL STACKS
14 ETHERNET, LANS AND VLANS
15 IP NETWORKS, ROUTERS AND ADDRESSES
16 MPLS AND CARRIER NETWORKS
17 THE INTERNET
18 WRAPPING UP

The third part of Telecom 101 is dedicated to the new-generation IP telecommunications network.

We begin by understanding how convergence was achieved by treating voice and video like data – then accordingly, cover the fundamentals of what used to be called “data communications”: DTEs, DCEs, LANs and WANs and the crucial concepts of packets and frames.

There are so many functions that need to be performed to implement phone calls, television, web browsing, email and everything else over the IP network, a structure is necessary to be able to identify and discuss separate issues separately. For this purpose, there is a chapter on the OSI Reference Model and its layers, identifying what the layers are, examples of protocols for each layer and how they work together in a protocol stack.

Then we begin moving up the layers. The next chapter is on Ethernet, LANs and VLANs (Layer 2), including MAC addresses and MAC frames, LAN cables, Optical Ethernet, LAN switches and how VLANs are used to separate traffic.

The next chapter is all about IP (Layer 3): how routers implement the network, routing tables, IP addresses, subnets, IPv4 address classes, static addresses, dynamic addresses and DHCP; public addresses, private addresses and NAT; and an overview of IP version 6.

On a real-world telecom network, a traffic management system is required. This is implemented with a technique called in general virtual circuits, and in particular with MPLS. The next chapter in the book covers the fundamentals, briefly reviews legacy technologies X.25, Frame Relay and ATM, then focuses on MPLS and how it is used to implement VPNs, Class of Service, service integration and traffic aggregation.

The last main chapter is on the Internet: its origins, what an ISP is and how an ISP connects to the rest of the Internet via transit and peering, the web, the Domain Name System, HTML and HTTP, SSL, MIME and base- 64 encoding for email, Internet telephony and Internet VPNs vs. business customer “MPLS service”.

The final chapter is a summary and wrap-up, covering technology deployment from the top down, useful reference charts listing all of the technologies, standard network designs and ending with a look at The Future.

APPENDICES

Telecommunications technology is in constant change – and some technologies that used to be of prime importance are not so important today, and so have been moved from the main part of the book into appendices. 

The very last part of the book provides a comprehensive list decoding mainstream acronyms and abbreviations used in telecom.

A ALL ABOUT T1
B LEGACY VOICE SERVICES AND JARGON
C ACRONYMS AND ABBREVIATIONS

Telecom 101
7" x 9" softcover textbook • 488 pages
4th edition • Published March 2016
print ISBN 9781894887038
eBook ISBN 9781894887786  

Get your copy today!

In the early 1990s, Motorola, the legendary American technology company developed a revolutionary satellite system called Iridium that promised to be its crowning achievement. Light years ahead of anything previously put into space, and built on technology developed for Ronald Reagan’s “Star Wars,” Iridium’s constellation of 66 satellites in polar orbit meant that no matter where you were on Earth, at least one satellite was always overhead, and you could call Tibet from Fiji without a delay and without your call ever touching a wire.

Iridium the satellite system was a mind-boggling technical accomplishment, surely the future of communication. The only problem was that Iridium the company was a commercial disaster. Only months after launching service, it was $11 billion in debt, burning through $100 million a month and crippled by baroque rate plans and agreements that forced calls through Moscow, Beijing, Fucino, Italy, and elsewhere. Bankruptcy was inevitable—the largest to that point in American history. And when no real buyers seemed to materialize, it looked like Iridium would go down as just a “science experiment.”

That is, until Dan Colussy got a wild idea. Colussy, a former head of Pan-Am now retired and working on his golf game in Palm Beach, heard about Motorola’s plans to “de-orbit” the system and decided he would buy Iridium and somehow turn around one of the biggest blunders in the history of business.

In Eccentric Orbits, John Bloom masterfully traces the conception, development, and launching of Iridium and Colussy’s tireless efforts to stop it from being destroyed, from meetings with his motley investor group, to the Clinton White House, to the Pentagon, to the hunt for customers in special ops, shipping, aviation, mining, search and rescue—anyone who would need a durable phone at the end of the Earth. Impeccably researched and wonderfully told, Eccentric Orbits is a rollicking, unforgettable tale of technological achievement, business failure, the military-industrial complex, and one of the greatest deals of all time.
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