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Featured Design Center |
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Playing nice -- LBS and Hybrid location technologies
The demand for Location-Based Services (LBS) has finally moved beyond the early-adopters with the rise in popularity of the iPhone. With consumer demand and the number of applications rising fast, there is a key prerequisite for their success: quick and accurate determination of a user's current location. Can it be done? Read and find out.
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Baseband/Multimedia Processing
Blackberry Storm has some good qualities, and some not so good
The imaging and telephony functions were up to snuff. The UI left a little to be desired.
Multimode wireless devices: It's the software, stupid!
The advent of parallel processing architectures is a big step toward realizing seamless, intelligent connectivity among 3G and 4G wireless standards, but the potential show stopper is the software. Thankfully, some companies are making progress when it comes to enabling hardware and software to work together in harmony.
PRODUCT HOW-TO: Simplify the design of the cellular base station digital predistortion subsystems
How to use Linear Tech's LTM9003 digital predistortion micromodule to build a fully integrated digital predistortion (DPD) reciver for use in cellular network base station designs.
See all Baseband/Multimedia Processing »
Batteries/Power Management
Multihoming support for data communication over cellular networks
A guide to interfacing an embedded system's application software with a second generation wireless communications protocol stack and how to configure and manage multi-homing support over GPRS modems using unreliable wireless channels.
Increase the speed while reducing the power in your MID's display
The popularity of Mobile Internet Devices (MIDs) will surely rise as the user experience improves.
Getting the most battery life from portable systems
Run time of portable systems is increasingly important as devices
become more feature-rich with power-hungry processors, transmitters,
receivers, and media playback, to name just a few. Using a battery
"fuel gauge" is the natural step to increasing run time of the system.
See all Batteries/Power Management »
RF/Antenna Design
Use a supplemental UMTS/HSDPA network architecture to increase data speed & bandwidth
This article proposes a supplemental UMTS/ HSDPA network architecture that cost-effectively improves service by increasing isolation to reduce interference, while increasing data speed bandwidth and coverage.
Book Excerpt, part 5 of 6: LTE and the Evolution to 4G Wireless--Design and Measurement Challenges
Chapter 2 of this just-published book explores and explains all technical aspects of 3GPP LTE cellular technology
Book Excerpt, part 4 of 6: LTE and the Evolution to 4G Wireless--Design and Measurement Challenges
Chapter 2 of this just-published book explores and explains all technical aspects of 3GPP LTE cellular technology
See all RF/Antenna Design »
Software and Security
Playing nice -- LBS and Hybrid location technologies
The demand for Location-Based Services (LBS) has finally moved beyond the early-adopters with the rise in popularity of the iPhone. With consumer demand and the number of applications rising fast, there is a key prerequisite for their success: quick and accurate determination of a user's current location. Can it be done? Read and find out.
Adapting UI designs to multiple embedded/mobile device display needs
The key elements and approaches needed to build user interfaces to meet the varying display requirements of mobile devices and any embedded system with a display and GUI.
Video: B'com, Toshiba win sockets in iPhone 3GS
Teardowns of the third generation Apple iPhone reveal a more integrated—and probably lower cost--handset thanks in part to new design wins for Broadcom and Toshiba that caused one analyst to quip the 'S' in the iPhone 3GS may stand for savings.
See all Software and Security »
Storage Architectures
How I survived a Zune HD, and even came to like it
The Zune HD, Microsoft's latest answer to the popular Apple iPod, is a reasonable alternative to the iTouch player, but users need to be willing to climb what were for me some pretty steep and frustrating hurdles in setting up and figuring out how to use the Microsoft device.
Content transfer: Speed versus ease of use
The concept was to look at download speeds across three different interfaces--USB, WiFi and 3G--to compare and contrast the speed and ease of use. Three different cellphones were tested: iPhone 3G, BlackBerry Bold and BlackBerry Storm.
Video: B'com, Toshiba win sockets in iPhone 3GS
Teardowns of the third generation Apple iPhone reveal a more integrated—and probably lower cost--handset thanks in part to new design wins for Broadcom and Toshiba that caused one analyst to quip the 'S' in the iPhone 3GS may stand for savings.
See all Storage Architectures »
See all Design Center »
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MOBILE HANDSET DESIGN CENTER ARCHIVE
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About the Mobile Handset DesignLine How-To Section
Mobile Handset DesignLine's How-To Section delivers detailed engineering articles focused on the design and development of cell phones and handsets based on 2G, 2.5G, 3G, 4G and WiMAX networks that may also include wireless networking options such as wireless LANs, (WLANs), WiMAX, fixed broadband wireless, WiBree, ZigBee, wireless mesh networking, ultrawideband (UWB), Bluetooth, and Enhanced Data Rate (EDR) Bluetooth. Design topics also covered in this category include mobile TV, radio frequency (RF) design, coexistence, multimedia audio and video processing, antenna engineering, baseband processing, memory, media access controller (MAC) design and physical-layer design.
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