Samsung Galaxy S2 With Android 2.3 Gingerbread will be released in February 2011

In addition to LG Electronics, Samsung as one of South Korea's largest electronics manufacturers reportedly also working on Android handsets with dual-core processor.

The name of Samsung Galaxy S’ heir is unknown right now, but the specifications of the smart phone will tear you apart and will make you wait for this gadget. i mean it.  The Samsung Galaxy S2 features a 4.5-inch Super AMOLED 2 touchscreen ( most likely the one which is introduced a couple  days ago by Samsung), 1.2GHz processor capable of playbacking 1080p Hd videos, Android 2. 3 Gingerbread, Bluetooth 3.0 support, Wifi 802.11b/g/n, built-in 16GB storage, 8-megapixel video camera with autofocus, Led flash, help for full Hd 1080p video recording, 14.4Mbps, Gps, and DLNA streaming.

Google Maps 5.0 Provides Offline Navigation

Google Map Service 5.0 can be accessed in a variety of devices using the Android platform 1.6 and later. The newest of the Google map feature this time is an additional three-dimensional (3D), compass and Offline Google Maps.
Offline Google Maps to display the image maps without connecting to the internet. The data presented is data that "raised" again, or has been shown before, using the phone's memory. Of course, this feature is useful for those who frequently access the same data and need 'guidance' direction faster than the need to connect first to the internet.

Map service that can be downloaded free of charge also uses vector graphics so that more measured reading of maps and clear in describing the condition of the original. Vector graphics is also possible that the original image map appear in the form of turned into a three-dimensional landscape. Unfortunately, for three-dimensional features can only be used on Android operating system 2.0 and later.

4G. What is it ?

4G is the short name for fourth-generation wireless, the stage of broadband mobile communications that will supercede the third generation (3G ).

Carriers that use orthogonal frequency-division multiplexing (OFDM) instead of time division multiple access (TDMA) or code division multiple access (CDMA) are increasingly marketing their services as being 4G, even when their data speeds are not as fast as the International Telecommunication Union  (ITU) specifies. According to the ITU, a 4G network requires a mobile device to be able to exchange data at 100 Mbit/sec. A 3G network, on the other hand, can offer data speeds as slow as 3.84 Mbit/sec.

From the consumer's point of view, 4G is a more a marketing term than a technical specification, but carriers feel justified in using the 4G label because it lets the consumer know that he can expect significantly faster data speeds. 

Although carriers still differ about whether to build 4G data networks using Long Term Evolution (LTE) or Worldwide Interoperability for Microwave Access WiMAX, all carriers seem to agree that OFDM is one of the chief indicators that a service can be legitimately marketed as being 4G.  OFDM is a type of digital modulation in which a signal is split into several narrowband channels at different frequencies. This is more efficient than TDMA, which divides channels into time slots and has multiple users take turns transmitting bursts or CDMA, which simultaneously transmits multiple signals on the same channel. 

When fully implemented, 4G is expected to enable pervasive computing, in which simultaneous connections to multiple high-speed networks will provide seamless handoffs throughout a geographical area. Coverage enhancement technologies such as femtocell and picocell are being developed to address the needs of mobile users in homes, public buildings and offices, which will free up network resources for mobile users who are roaming or who are in more remote service areas.

iPhone 5 (Released End of June 2011)

A reliable source at Apple, convey that the latest generation of Apple's smart phone (iPhone 5) will be introduced in mid-2011.

Reported by Softpedia on Saturday (20/11/2010), the iPhone 5 will reportedly be introduced at the WWDC 2011 in San Francisco, USA. This means that these phones will be launched in late June 2011.

Ever since the beginning of the reliable iPhone 5 rumors in July, people have been Photoshopping and mocking up their versions of what the iPhone 5 would look like. Most of the designs that have risen to the top, however, have been nothing truly “out of the box.” But given the cryptic comment above, we can surmise that Apple has something groundbreaking in the works for the how the next iPhone will look and feel in the palm of your hand — something that no one is anticipating.

Google Nexus S

Nexus S is the next generation of Nexus devices, co-developed by Google and Samsung.

Nexus S is the first phone to run Gingerbread, the fastest version of Android yet. Gingerbread builds on some of the most popular Android features like multi-tasking and Wi-Fi hotspot and adds a refreshed user interface, an improved keyboard, near field communication (NFC) support, and more. 

The latest Android platform (Gingerbread), paired with a 1 GHz Hummingbird processor and 16GB of memory, makes Nexus S one of the fastest phones on the market. It comes pre-installed with the best of Google apps and enabled with new and popular features like true multi-tasking, Wi-Fi hotspot, Internet Calling, NFC support, and full web browsing. With this device, users will also be the first to receive software upgrades and new Google mobile apps as soon as they become available.

Nexus S specification:
 
 Screen

• 4.0-inch WVGA (480x800)
• Contour Display with curved glass screen
• Super AMOLED
• 235 ppi
• Capacitive touch sensor
• Anti-fingerprint coating display

CPU

• Samsung Cortex A8 processor 1GHz (Hummingbird)
• INAND 16GB of internal memory flash memory
• 512 MB RAM Memory

Battery

• Type Lithum Ion 1500 mAh
• 6.7 hours of talk time on 3G and 14 hours on 2G
• 17.8 days standby time on 3G and 2G 29.7 days in

Connection

• Quad-band GSM: 850, 900, 1800, 1900
• Tri-band HSPA: 900, 2100, 1700
• HSPA type: HSDPA (7.2Mbps), HSUPA (5.76Mbps)
• Wi-Fi 802.11 n / b / g
• Bluetooth 2.1 + EDR
• Near Field Communication (NFC)
• Assisted GPS (A-GPS)
• microUSB 2.0
• Infrared

Dimension

• Size 63mm x 123.9mm x 10.88mm
• Weight 129 grams

Hardware

• Haptic vibration feedback
• Three-axis gyroscope
• Accelerometer
• Digital compass
• Proximity sensors
• Light sensor

Multimedia

• Behind the 5 megapixel camera (2560x1920), supports HD Video
• Front camera VGA (640x480)
• 3.5mm stereo headset jack and noise cancellation
• FM Radio

Software

• Android 2.3 (Gingerbread)
• Android Market
• Calendar
• Gmail
• Google Earth
• Navigation with Google Maps
• Google Search
• Google Talk
• Google Voice
• Voice Actions
• YouTube

 For more details,

visit http://www.google.com/nexus.

3G. What is it?

3G refers to the third generation of mobile telephony (that is, cellular) technology. The third generation, as the name suggests, follows two earlier generations.

The first generation (1G) began in the early 80's with commercial deployment of Advanced Mobile Phone Service (AMPS) cellular networks. Early AMPS networks used Frequency Division Multiplexing Access (FDMA) to carry analog voice over channels in the 800 MHz frequency band.

The second generation (2G) emerged in the 90's when mobile operators deployed two competing digital voice standards. In North America, some operators adopted IS-95, which used Code Division Multiple Access (CDMA) to multiplex up to 64 calls per channel in the 800 MHz band. Across the world, many operators adopted the Global System for Mobile communication (GSM) standard, which used Time Division Multiple Access (TDMA) to multiplex up to 8 calls per channel in the 900 and 1800 MHz bands.

The International Telecommunications Union (ITU) defined the third generation (3G) of mobile telephony standards – IMT-2000 – to facilitate growth, increase bandwidth, and support more diverse applications. For example, GSM could deliver not only voice, but also circuit-switched data at speeds up to 14.4 Kbps. But to support mobile multimedia applications, 3G had to deliver packet-switched data with better spectral efficiency, at far greater speeds.

However, to get from 2G to 3G, mobile operators had make "evolutionary" upgrades to existing networks while simultaneously planning their "revolutionary" new mobile broadband networks. This lead to the establishment of two distinct 3G families: 3GPP and 3GPP2.

The 3rd Generation Partnership Project (3GPP) was formed in 1998 to foster deployment of 3G networks that descended from GSM. 3GPP technologies evolved as follows.

• General Packet Radio Service (GPRS) offered speeds up to 114 Kbps.

• Enhanced Data Rates for Global Evolution (EDGE) reached up to 384 Kbps.

• UMTS Wideband CDMA (WCDMA) offered downlink speeds up to 1.92 Mbps.

• High Speed Downlink Packet Access (HSDPA) boosted the downlink to 14Mbps.

• LTE Evolved UMTS Terrestrial Radio Access (E-UTRA) is aiming for 100 Mbps.

GPRS deployments began in 2000, followed by EDGE in 2003. While these technologies are defined by IMT-2000, they are sometimes called "2.5G" because they did not offer multi-megabit data rates. EDGE has now been superceded by HSDPA (and its uplink partner HSUPA). According to the 3GPP, there were 166 HSDPA networks in 75 countries at the end of 2007. The next step for GSM operators: LTE E-UTRA, based on specifications completed in late 2008.

A second organization the 3rd Generation Partnership Project 2 (3GPP2) -- was formed to help North American and Asian operators using CDMA2000 transition to 3G. 3GPP2 technologies evolved as follows.

• One Times Radio Transmission Technology (1xRTT) offered speeds up to 144 Kbps.

• Evolution – Data Optimized (EV-DO) increased downlink speeds up to 2.4 Mbps.

• EV-DO Rev. A boosted downlink peak speed to 3.1 Mbps and reduced latency.

• EV-DO Rev. B can use 2 to 15 channels, with each downlink peaking at 4.9 Mbps.

• Ultra Mobile Broadband (UMB) was slated to reach 288 Mbps on the downlink.

1xRTT became available in 2002, followed by commercial EV-DO Rev. 0 in 2004. Here again, 1xRTT is referred to as "2.5G" because it served as a transitional step to EV-DO. EV-DO standards were extended twice – Revision A services emerged in 2006 and are now being succeeded by products that use Revision B to increase data rates by transmitting over multiple channels. The 3GPP2's next-generation technology, UMB, may not catch on, as many CDMA operators are now planning to evolve to LTE instead.

In fact, LTE and UMB are often called 4G (fourth generation) technologies because they increase downlink speeds an order of magnitude. This label is a bit premature because what constitutes "4G" has not yet been standardized. The ITU is currently considering candidate technologies for inclusion in the 4G IMT-Advanced standard, including LTE, UMB, and WiMAX II. Goals for 4G include data rates of least 100 Mbps, use of OFDMA transmission, and packet-switched delivery of IP-based voice, data, and streaming multimedia.

The 10 best Google Android phones

1. HTC Desire
The HTC Desire is the best Google phone yet made, and one of the first handsets that is not only better on paper than an iPhone but also as good to use. A range of widgets that fix on the devices various homescreens make multitasking really easy, and Google’s mapping software is superb because of the phone’s impressive hardware, too. The only downside is that the battery life has yet to catch up with the processor’s capacity to run software. 

 2. Nexus One
The first phone designed by Google (in association with HTC) was, on its release, a superb handset – its only weakness is that it has now been overtaken by others. It is, however, still a satisfying thing to hold, well-weighted and very small. It’s also one of a few phones that is, in conjunction with, for instance the Amazon MP3 Store, an acceptable replacement for an iPhone. It’s got a perfectly adequate five megapixel camera, Bluetooth and Wi-Fi of course, and it’s fast enough to run a decent number of apps or Google’s navigation at a usable speed.

 3. Xperia X10 Mini Pro
The startling thing about the X10 Mini Pro is simply how mini it is – this is a phone that is almost too small to be a convincing handset. But with a slide out keyboard, it’s usable even for those with fairly podgy fingers. There’s a five-megapixel camera, a built-in radio – and room for plenty more space in even the smallest handbag.

4. HTC Legend
Perhaps the most stylish Android handset on the market at the moment, the HTC Legend is made from a single piece of aluminium. Similar in shape to the HTC Hero, it uses the same kind of manufacturing process used by Apple to make its unibody Mac computers. The Legend has a 3.2in AMOLED screen, which produces pin-sharp images and bright, crisp colours, and combines a touch-screen interface with an optical trackpad for easier menu navigation. 

5. Xperia X10
Sony Ericsson’s flagship Android handset is a fine phone – with an eight megapixel camera and a 10 hours battery life, the Sony Ericsson interface adds a level of depth to the Google experience that rivals HTC’s Sense skin.

6. HTC Hero
The Hero was, when it was first launched, heralded as the first breakthrough handset for Android. Forgive this device the ridiculous chin that makes any man carrying it in a suit’s breast pocket appear to be either packing a holster or wearing a truss. This is a slick handset with a decent interface. It’s only unfortunate because it has not yet been upgraded to the version of Android that will allow it to run satnav-style navigation in Google Maps. 

7. Samsung Galaxy Portal
As a budget handset, the Galaxy Portal is impressive – a three-megapixel camera is a small fly in the ointment, but it produces adequate images. It offers all the usual video-recording, Wi-Fi and Bluetooth capabilities and claims up to about seven hours of talk time. The build quality simply isn’t as high as some of HTC’s premium products, but considering that it’s available from free on some very inexpensive tariffs, the Galaxy Portal is impressive.

8. Motorola Milestone
When it was launched in America, as the Droid, the Milestone sold almost as many units in its first two and half months as the iPhone. It did not – quite – live up to the expectations, but this is an impressive phone. It’s got a slide out keyboard, which for once feels genuinely useful without being clunky. And it has also got Motorola’s navigation built-in. Add in the car holder, and this is a pretty compelling handset, and probably one of your best options if you want an inexpensive Android phone with a keyboard. 

9. LG InTouch Max GW620
The GW620 is very nearly a fantastic Android phone. But there are too many niggles for it to be perfect. On a petty note; what's the point of a camera timer if the phone's sides are curved so you can't stand the phone up on its own? Sony Ericcson is much better at camera phone design. And when it comes to interface design, HTC are much better. Again, it’s got a five megapixel camera and eight hours of talktime. So there’s not much to complain about, but consumers can do better than this for the money.

10. T-Mobile G2 Touch
The G1 was the first of all the Google Android handsets, and with its slide-out keyboard and bricklike design, it was hard to see that the phone would ever challenge Apple. This second generation model is a lot better, having ditched the keyboard for a straightforward touch screen. There’s a five megapixel camera and eight hours of talk time – but beware: as this is simply a rebadged HTC Hero, buying one on T-Mobile limits your options.

 

 

Version http://www.telegraph.co.uk 

 

Android

 Android is a mobile operating system initially developed by Android Inc. Android was purchased by Google in 2005. Android is based upon a modified version of the Linux kernel. Google and other members of the Open Handset Alliance collaborated to develop and release Android to the world. The Android Open Source Project (AOSP) is tasked with the maintenance and further development of Android. Unit sales for Android OS smartphones ranked first among all smartphone OS handsets sold in the U.S. in the second and third quarters of 2010 with a third quarter market share of 43.6%.

Android has a large community of developers writing application programs ("apps") that extend the functionality of the devices. There are currently over 100,000 apps available for Android. Android Market is the online app store run by Google, though apps can be downloaded from third party sites (except on AT&T, which disallows this). Developers write in the Java language, controlling the device via Google-developed Java libraries.

The unveiling of the Android distribution on 5 November 2007 was announced with the founding of the Open Handset Alliance, a consortium of 79 hardware, software, and telecom companies devoted to advancing open standards for mobile devices. Google released most of the Android code under the Apache License, a free software and open source license.

The Android operating system software stack consists of Java applications running on a Java based object oriented application framework on top of Java core libraries running on a Dalvik virtual machine featuring JIT compilation. Libraries written in C include the surface manager, OpenCore media framework, SQLite relational database management system, OpenGL ES 2.0 3D graphics API, WebKit layout engine, SGL graphics engine, SSL, and Bionic libc. The Android operating system consists of 12 million lines of code including 3 million lines of XML, 2.8 million lines of C, 2.1 million lines of Java, and 1.75 million lines of C++.

 Visit http://developer.android.com

Wiley: Mobile WiMAX

Format : PDF
ISBN: 047051941X
Pub Date: April 04, 2008















The first book to cover one of the hottest subjects in wireless communications today, Mobile WiMAX.

* Summarises the fundamental theory and practice of Mobile WiMAX

* Presents topics at introductory level for readers interested in understanding communication and networking knowledge for Mobile WiMAX, whilst addressing advanced / specialised subjects related to Mobile WiMAX

* Contains the latest advances and research from the field and shares knowledge from the key players working in this area

Chapter 1 updates Mobile WiMAX status and standards; Chapters 2-6 are related to physical layer transmission; Chapters 7-12 deal with MAC and networking issues; Chapters 13-14 discuss relay networks for mobile WiMAX; and Chapters 15-19 present multimedia networking for mobile WiMAX and application scenarios.

Ideal for Mobile WiMAX R&D/practicing engineers (systems, applications and services, field, terminal, IC design, integration), business development professionals, academic researchers. Graduate students conducting research and graduate students studying in mobile WiMAX and next generation wireless communications. Undergraduate students studying mobile WiMAX related subjects.

Download here

WiMAX: Standards and Security

ISBN:  9781420045239
ISBN 10:  1420045237
Publication Date:  September 07, 2007
Number of Pages:  280          

Format : PDF

As the demand for broadband services continues to grow worldwide, traditional solutions, such as digital cable and fiber optics, are often difficult and expensive to implement, especially in rural and remote areas. The emerging WiMAX system satisfies the growing need for high data-rate applications such as voiceover IP, video conferencing, interactive gaming, and multimedia streaming. WiMAX deployments not only serve residential and enterprise users but can also be deployed as a backhaul for Wi-Fi hotspots or 3G cellular towers. By providing affordable wireless broadband access, the technology of WiMAX will revolutionize broadband communications in the developed world and bridge the digital divide in developing countries.

Part of the WiMAX Handbook, this volume focuses on the standards and security issues of WiMAX. The book examines standardized versus proprietary solutions for wireless broadband access, reviews the core medium access control protocol of WiMAX systems, and presents carriers’ perspectives on wireless services. It also discusses the main mobility functions of the IEEE 802.16e standard, describes how to speed up WiMAX handover procedures, presents the 802.16 mesh protocol, and surveys the testing and certification processes used for WiMAX products. In addition, the book reviews the security features of both IEEE 802.16 and WiMAX.

With the revolutionary technology of WiMAX, the lives of many will undoubtedly improve, thereby leading to greater economic empowerment.

Download here

WiMax Operator's Manual: Building 802.16 Wireless Networks, 2nd Edition

Publisher: Apress; 2 edition
Language: English
ISBN: 1590595742
Paperback: 210 pages
Data: November 16, 2005
Format: PDF

This second edition includes most of the material from the first edition, plus new discussions about the ultra-fast mobile telephone standard High Speed Downlink Packet Access (HSDPA) and the Ultra Wideband (UWB) technology. Other topics include mobile voice and entertainment, new backup systems, and changes to DSL technologies.
The book addresses the planning, construction, and day-to-day operation of a standards-based broadband wireless network. It examines the advantages of broadband wireless and how it constitutes an ideal solution. It also explains the unique difficulties, challenges, and limitations of broadband wireless.
This book illustrates how to plan and run networks, and indicates which specialized services should be secured. Youll learn how to plan a successful, profitable broadband wireless network in a short amount of time.

Download here

WiMAX:Technologies Performance Analysis and QoS

CRC Press | ISBN: 9781420045253 | 196 pages | English | 3.97 MB

Introduction
A typical wireless communication system contains several signal processing steps. In addition to the radio front-end, radio systems commonly incorporate several digital components such as a digital baseband processor, a media access controller, and an application processor. An overview of such a system is illustrated in Figure 1.1.
Most wireless systems contain two main computational paths, the transmit path and the receive path. In the transmit path, the baseband processor receives data from the media access control (MAC) processor and performs
• Channel coding
• Modulation
• Symbol shaping
before the data is sent to the radio front-end via a digital to analog converter (DAC). In the receive path, the RF signal is first down-converted to an analog baseband signal. The signal is then conditioned and filtered in the analog baseband circuitry. After this the signal is digitized by an analog to digital converter (ADC) and sent to the digital baseband processor that performs
• Filtering, synchronization, and gain control
• Demodulation, channel estimation, and compensation
• Forward error correction (FEC)
before the data is transferred to the MAC protocol layer.
The aim of this chapter is to give an introduction to the programmable baseband processors suited for WiMAX systems and other multimode wireless systems. Related processing challenges that influence the design of such processors are also highlighted. A mapping of the WiMAX mode IEEE
802.16d onto a programmable processor is used as an example to illustrate the computational requirements on a WiMAX system.

Download here

WiMAX: Taking Wireless to the MAX

• Hardcover: 384 pages
• Publisher: Auerbach Publications; 1 edition (May 30, 2006)
• Language: English
• ISBN-10: 0849371864
• ISBN-13: 978-0849371868

With market value expected to reach $5 billion by 2007 and the endorsement of some of the biggest names in telecommunications, World Interoperability for Microwave Access (WiMAX) is poised to change the broadband wireless landscape. But how much of WiMAX’s touted potential is merely hype? Now that several pre-WiMAX networks have been deployed, what are the operators saying about QoS and ROI? How and when will device manufacturers integrate WiMAX into their products? What is the business case for using WiMAX rather than any number of other established wireless alternatives? WiMAX: Taking Wireless to the MAX examines the evolution of wireless, broadband, and the wireless broadband landscape with exhaustive coverage of technological advances and evolving topologies. It sets the tone for the journey towards untouched wireless heights - WiMAX. The author builds a complete understanding of Broadband Wireless Access (BWA) Technologies, elaborating on past developments, present needs and uses, and future trends and markets. He lays out a road map to the future and articulates present and future applications and models of BWA with focus on WiMAX. The book also provides a detailed discussion on the advanced technologies central to the existence of WiMAX. It presents strategies for building the case for WiMAX and achieving success for the different players, including service providers and equipment manufacturers. An increasing demand for access to information anytime, anywhere has led to explosive growth in access and wireless technologies. The trend has created new competitive threats as well as new opportunities in every walk of life. The task, then, is to turn possibilities into realities and provide solutions that enable anywhere, anytime access to information and applications at low cost and with a small investment. Taking a coherent and fact-based approach, this book explores the space between what is known and available and what industry needs.

Download here

Wimax - A Wireless Technology Revolution

• ISBN: 0849370590
• Language: English
• Release Date: 2007-10-19 00:00:00
• Category: Wireless Network

 The demand for broadband connectivity is growing rapidly, but cannot be met effectively by existing wireline technology. WiMAX has the potential to provide widespread Internet access that can usher in economic growth, better education and healthcare, and improved entertainment services. Examining the technology's global development and deployment activities, WiMAX: A Wireless Technology Revolution presents its unique features and evaluates its revolutionary approach over contemporary technologies.

The book covers the mission, product, and services of WiMAX, as well as specific features such as security and mobility. It discusses the implementation of the IEEE 802.16 standard and also explores how WiMax stacks up to 3G and 4G and the economic and opportunity costs. This reference also analyzes the future prospects of WiMAX and its contribution to the wireless and mobile communication technology field. It is a must-have resource for those who are either intrigued or involved with this standards-based technology that has the ability to provide high-throughput broadband connections over long distances.


Download here

Fundamentals of WiMAX (pdf)

Authors: Jeffrey G. Andrews, Arunabha Ghosh, and Rias Muhamed
Publisher: Prentice Hall

Book description
The Definitive Guide to WiMAX Technology WiMAX is the most promising new technology for broadband wireless access to IP services. It can serve an extraordinary range of applications and environments: data, voice, and multimedia; fixed and mobile; licensed and unlicensed. However, until now, wireless professionals have had little reliable information to guide them. Fundamentals of WiMAX is the first comprehensive guide to WiMAX--its technical foundations, features, and performance. Three leading wireless experts systematically cut through the hype surrounding WiMAX and illuminate the realities. They combine complete information for wireless professionals and basic, accessible knowledge for non-experts. Professionals will especially appreciate their detailed discussion of the performance of WiMAX based on comprehensive link- and system-level simulations. Whether you're a wireless engineer, network architect, manager, or system designer, this book delivers essential information for succeeding with WiMAX--from planning through deployment. Topics include Applications, history, spectrum options, technical and business challenges, and competitive technologies of WiMAX 802.16 standards: physical and MAC layers, channel access, scheduling services, mobility, advanced antenna features, hybrid-ARQ, and more Broadband wireless channels: pathloss, shadowing, cellular systems, sectoring, and fading--including modeling and mitigation OFDM: from basic multicarrier concepts to synchronization, PAR reduction, and clipping MIMO: Multiple antennas, spatial diversity, beamforming, and a cutting-edge treatment of the use of MIMO in WiMAX OFDMA: multiple access, multiuser diversity, adaptive modulation, and resource allocation Networking and services aspects: architecture and protocols for IP QoS, session management, ecurity, and mobility management Predicting performance using link-level and system-level simulations WiMAX network architecture: design principles, reference models, authentication, QoS, and mobility management About the Author
Jeffrey G. Andrews is an assistant professor at The University of Texas at Austin. He has developed CDMA systems for Qualcomm and consulted with many organizations including the WiMAX Forum, Microsoft, and NASA. He is a recipient of the NSF CAREER Award and holds a Ph.D. from Stanford University.
Arunabha Ghosh, a principal member of technical staff at AT&T Labs, specializes in wireless communication theory and signal processing and has been involved in standardization efforts in the WiMAX Forum. He holds a Ph.D. from the University of Illinois at Urbana-Champaign.
Rias Muhamed is a lead member of technical staff at AT&T Labs. He has led several research and technology assessment projects in fixed wireless broadband at AT&T Labs. He is a senior member of the IEEE and holds an M.S. from Virginia Tech.

Download here

WiMAX

What is WiMAX?

WiMAX is an IP based, wireless broadband access technology that provides performance similar to 802.11/Wi-Fi networks with the coverage and QOS (quality of service) of cellular networks. WiMAX is also an acronym meaning "Worldwide Interoperability for Microwave Access (WiMAX).

WiMAX is a wireless digital communications system, also known as IEEE 802.16, that is intended for wireless "metropolitan area networks". WiMAX can provide broadband wireless access (BWA) up to 30 miles (50 km) for fixed stations, and 3 - 10 miles (5 - 15 km) for mobile stations. In contrast, the WiFi/802.11 wireless local area network standard is limited in most cases to only 100 - 300 feet (30 - 100m).

With WiMAX, WiFi-like data rates are easily supported, but the issue of interference is lessened. WiMAX operates on both licensed and non-licensed frequencies, providing a regulated environment and viable economic model for wireless carriers.

At its heart, however, WiMAX is a standards initiative. Its purpose is to ensure that the broadband wireless radios manufactured for customer use interoperate from vendor to vendor. The primary advantages of the WiMAX standard are to enable the adoption of advanced radio features in a uniform fashion and reduce costs for all of the radios made by companies, who are part of the WiMAX Forum™ - a standards body formed to ensure interoperability via testing. The more recent Long Term Evolution (LTE) standard is a similar term describing a parallel technology to WiMAX that is being developed by vendors and carriers as a counterpoint to WiMAX.

http://www.wimax.com

 

iPad-The best way to experience the web, email, photos, and video. Hands down.

iPad 

All of the built-in apps on iPad were designed from the ground up to take advantage of the large Multi-Touch screen and advanced capabilities of iPad. And they work in any orientation. So you can do things with these apps that you can’t do on any other device.

The best way to see the sites.

The best way to keep in touch.

You’ll never look at your photos the same way again.

With the built-in Photos app on iPad, you can see and touch your photos in intuitive new ways.

   

Your music. Like you’ve never seen it before.

The big, beautiful iPad display lets you browse your music collection by song, artist, album, genre, or composer with the touch of a finger. See your music as full-size album art

Now you can see more of the world.

Finding your way is a completely new experience on iPad.

and etc.

For a more visit..

iPad

3G Evolution: HSPA and LTE for Mobile Broadband

Stefan Parkvall, Johan Skold, Per Beming
ISBN: 012372533X
October 2007

Third-generation (3G) cell-phone technologies have been a long time in coming. But they are with us now and are beginning to make a difference in cellular service, particularly in non-voice applications such as e-mail, Internet access, and video. The 3G technologies include the WCDMA system with its high-speed packet access (HSPA) upgrades, Qualcomm’s cdma2000 technology with its EV-DO systems and Rev A and Rev B upgrades, as well as forthcoming 4G technology known as Long Term Evolution (LTE). With 3G now upon us, it is more important than ever to understand these new systems, how they are designed and how they are applied. This book does a good job of covering this subject.

The primary emphasis is on the ITU’s International Mobile Telecommunications 2000 standard that is developed and maintained by the Third Generation Partnership Project (3GPP). This is a WCDMA system with HSPA upgrades. The evolving LTE technology that will eventually replace the WCDMA system is covered. The book focuses on how to increase the data speed of cellular systems and all the related issues. This is dealt with at the mathematical level but the explanations are very clear. The book includes a great introduction to OFDM and multiple antenna technologies if you are still not up to speed on these essential wireless methods.

A huge portion of the book is devoted to the emerging HSPA technologies slowly being implemented in the US and worldwide. They make the WCDMA systems of today faster and more desirable. The remainder of the book is devoted to the LTE system. A good introduction if you are starting from scratch and a good reference if you are working in this field. I really liked the chapter on other wireless communications systems. A great summary and overview of cdma2000, Rev A and B, Ultra Mobile Broadband (UMB), WiMAX, and the 802.20 system. A big downer is that there’s no coverage of the Chinese TD-SCDMA system, which is becoming a big part of 3G. Nonetheless, it is still recommended.

HTC EVO 4G and Apple iPhone 3GS: side by side

In the dawn of the Apple iPhone 4 launch, the iPhone 3GS takes on the mighty HTC EVO 4G in this epic PhoneArena video comparison. The EVO 4G is without a doubt a dreadful Android smartphone, but the iPhone 3GS clearly shows that it still has a few tricks up its sleeve.
For a more thorough comparison of these handsets, visit our website at: http://www.phonearena.com/htmls/Apple-iPhone-3GS-and-HTC-EVO-4G-side-by-side-review-r_2456.html