Use envelope tracking in multi-carrier PAs
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2008-03-16 |
| Use envelope tracking to increase RF PA efficiency regardless of device technology and while preserving the benefits of high spectral efficiency possible with modern wireless communication standards. |
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| Will Wi-Fi be a fundamental RAN?
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2009-03-30 |
| Know why Wi-Fi is poised to become the highest-performance, lowest-cost, indoor RAN technology on the market. |
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| Pushing for next-generation cellular technology
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2010-05-19 |
| To succeed in the next generation of wireless technology, RF hardware must become more compact, cost efficient, and capable of adapting many-band configurations. |
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| Optimise software to up radio performance
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2009-10-23 |
| Since the dawn of cellular communications, the industry has advanced through three generations of radio standards and is about to launch 4G. The market has been focusing on programmable silicon while the potential show stopper is the software. |
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| Handset's touch sensor permits more functions in less space
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2007-05-30 |
| When you're designing a handset, it's all about how many features you can pack into a tiny space. The more features, the better, right? |
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| Dual regulator typology needed to power modern cellphones
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2004-08-16 |
| POWER |
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| Getting base stations ready for LTE
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2007-04-17 |
| Meeting LTE computation requirements require a sound grasp of all hardware signal processing technologies. |
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| iPhone 4 design exhibits high reuse
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2010-06-29 |
| The new Apple iPhone 4 could very well be called an iPad since it uses at least seven chips from the popular Apple tablet, according to analysts from UBM TechInsights. |
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| Design WiMAX picocells with AGC, Part 2
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2009-02-10 |
| Know how MAC algorithms can be used to provide additional margin to WiMAX system designs. |
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| Setting the pace for next-gen cellular technology
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2010-01-27 |
| As the cellular industry moves to more powerful, flexible and sophisticated products, time-to-market remains vital while driving reductions in size, cost, complexity and test times. |
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| Moto Fone is elegant yet simple
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2007-09-17 |
| Portelligent performed a teardown on the dual-band Motorola's F3 Fone shortly after its release to determine the level of innovation occurring in this segment. |
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| The essential aspects of LTE's PHY (Part 1)
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2010-06-22 |
| The design of the LTE physical layer (PHY) is heavily influenced by requirements for high peak transmission rate (100Mbit/s DL/50Mbit/s UL), spectral efficiency and multiple channel bandwidths (1.25-20MHz). |
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| Packet switching right choice for wireless
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2001-02-01 |
| The Internet switching model can cost two orders of magnitude less than conventional circuit architectures, making the economics of an IP network very attractive. |
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| Translate your WCDMA specs into receiver requirements
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2006-08-21 |
| This article discusses the additional considerations required by WCDMA handsets. |
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| Overcome design complexities in multi-core networking (Part 2)
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2009-10-01 |
| This article discusses in more detail how multi-core can be used for a new design for 4G telecommunications infrastructure and for a network offload engine for an existing SIP server. |
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| Yukyung marshals army of IC vendors for Viliv tablet
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2011-03-28 |
| "Globally" designed and based on Windows, Yukyung Technologies' Viliv X70 EX 3G is a good example of a tablet that preceded the iPad. |
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| Sensor bolsters smart phone's imaging quality
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2009-12-24 |
| This teardown reveals that as a telephone, the BlackBerry Storm worked well—boasting attractive imaging quality for both still images and video. |
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| Design WiMAX picocells with AGC
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2009-01-29 |
| Here are cost- and power-efficient techniques for developing femtocells and picocells using WiMAX transceivers. |
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| Digital control fits power amps for 3G
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2001-04-15 |
| Digital control fits power amps for 3G |
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| Full-featured Sony Ericsson UMTS phones are ultrathin
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2007-09-10 |
| Recent teardowns by Portelligent—of the 10mm-thick UMTS Sony Ericsson W880i—reveal a trimming of the display module waistline to enable a class of highly functional, ultrathin candy-bar cell phones. |
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| Position location strategies, applications (Part 4)
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2012-01-06 |
| This instalment tackles the concept of cognitive radio together with some recent results in the area of position location. |
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| Deal with TD-SCDMA performance requirements
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2005-08-16 |
| TD-SCDMA transmits and receives on the same frequency, allowing path estimation that can be exploited with intelligent base-station arrays |
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| GPRS networks pave way for 3G launch
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2001-08-16 |
| The tussle between 2.5G and 3G is subject to sharp technology and marketplace contrasts. This paper evaluates critical issues in this space. |
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| Evaluate carefully your RF production test options
|
2004-08-02 |
| While complex wireless devices are a test engineer's nightmare, help is at hand in the form of advanced test devices. |
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| Understanding HSDPA's implementation challenges
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2005-09-01 |
| HSDPA promises to bridge the gap between 3G and Internet in delivering high-speed data access to many users in a cell |
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| Extending voice apps in automobiles
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2004-04-01 |
| Adopting embedded synthetic voice technology, we can transform visual information from vehicle telephone to an audio form. |
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| Making RF cellular design simple
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2005-11-01 |
| The challenge in RF handsets is to consume less PCB space as more features are embedded without sacrificing performance |
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| Using test sets, systems for handset development
|
2004-09-01 |
| Mobile phones have evolved into complex voice and data mobile devices requiring extensive, yet efficient, testing during development to meet the fast time-to-market goals. |
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| Fast testers now tackle wireless handsets
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2005-09-16 |
| Here's a new-generation test solution that uses. advanced hardware and software for quick and accurate measurements in a variety of handsets |
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| Separate vs. integrated smart-phone components
|
2005-06-01 |
| Only by weighing the trade-offs can a designer arrive at the best possible wireless-appliance solution for a specific design requirement |
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Strange modes of transport and other "stuff"
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