Optimise RF PA efficiency to improve handset's talk-time
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2006-06-26 |
| DC-DC switching converters improves average PA efficiency based on typical RF power transmit probability distributions for WCDMA systems. |
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| Seven requirements for GPRS/UMTS terminals
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2003-11-17 |
| Seven requirements for GPRS/UMTS terminals |
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| Multicarrier WCDMA Feasibility (Part 1)
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2007-08-14 |
| This article explains the implementation of a multi-carrier transceiver for WCDMA and what the performance of the major subsystem needs to be. |
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| Handheld phone/PC offers full-size laptop features
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2007-09-10 |
| Advantage X7500 a PocketPC phone is much smaller than a laptop, more like a conventional PDA. But it offers much of the same functionality of the laptop. |
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| Mobile net demands optimized design
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2001-02-01 |
| Manufacturers of wireless Internet access systems will play a key role in delivering a new class of wireless services and applications for entertainment, e-commerce and multimedia messaging. |
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| DSP power propels next-generation wireless
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2001-04-15 |
| The enhancements of wireless design offers new opportunities with tough tech challenges for designers. However, DSPs will remain a fundamental part of wireless design. |
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| Integrating LTE with infotainment, telematics apps
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2011-10-12 |
| Learn how these applications will benefit not just from the supercharged capacity and range of LTE, but from the much lower latency of LTE systems. |
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| Position location strategies, applications (Part 3)
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2011-11-07 |
| Learn about some aspects of mobility that need to be considered to balance the capacity–coverage trade-off that mobility causes. |
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| Utilising MEMS for advanced mobile apps
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2012-01-02 |
| Learn about the more advanced applications for MEMS sensors, such as augmented reality, location-based services, pedestrian dead-reckoning, that are currently being developed. |
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| COTS solutions push telecom apps development
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2007-02-03 |
| A move to COTS also requires a close examination of the software architecture. |
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| Optimize RF PA efficiency to increase handset's talk-time
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2006-06-26 |
| The requirement for linear PAs in systems that have both amplitude-modulation and phase-modulation components require system designers to use DC-DC switching converters to supply the optimal voltage to the RF PA. This improves average PA efficiency based on typical RF power transmit probability distributions for WCDMA systems. |
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| Mobile WiMAX all set for portables
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2009-03-17 |
| Read about WiMAX sub-systems packaged in self-contained modules to simplify the integration of this technology. |
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| Multicarrier WCDMA Feasibility (Part 4)
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2007-08-27 |
| This article explains the implementation of a multi-carrier transceiver for WCDMA, focusing on PA linearization. |
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| Giving small speakers' audio quality a shot in the arm
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2010-09-02 |
| Handset manufacturers face various constraints in improving audio quality, with two of the main ones being the size of the cell phone case and how compressed the audio file is. |
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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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| iPad teardown reveals high processor-to-memory channel
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2010-05-12 |
| Here's a teardown of the Apple iPad, which was found to have an unusually high processor-to-memory channel, an abundance of touchscreen silicon and a novel case design. |
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| Multicarrier WCDMA Feasibility (Part 2)
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2007-08-21 |
| This article explains the implementation of a multi-carrier transceiver for WCDMA, focusing on variable gain amplifier (VGA) implementation and spurious free dynamic range (SFDR). |
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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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| Signal compression eases migration to 4G
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2008-12-23 |
| Know how to use signal compression to enable the continued use of low cost fiber optic transceivers. |
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| Inside the gPhone-and Google's Android alliance
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2007-11-13 |
| What exactly will the GPhone?that vaporous handset that's the subject of furious speculation?actually look like? |
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| Road to wireless Net has bumps
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2001-05-16 |
| The fundamental obstacle that compromises the promise of the wireless Internet is rooted in the traditional IP suite, which was not designed for wireless networks. |
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| Get the most power for your next gen mobile phone design
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2008-10-09 |
| Here's an analysis of how future handset power supply needs can be addressed by a unified power platform. |
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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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| 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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| Optimizing DSPs for wireless world
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2001-04-15 |
| Complexities in next-generation requirements is taxing the capabilities of traditional DSP technology and design methodologies, causing a need for industry business models to be drastically redefined. |
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| Make 4G wireless a reality
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2009-01-19 |
| Know the infrastructure changes required for 4G services, and the considerations in making those changes. |
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| Consider FFT module reuse in OFDM modulation
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2008-09-24 |
| This document discusses how to implement CP insertion and removal for OFDM modulation and demodulation. |
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| An overview of TD-LTE
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2011-10-11 |
| What is TD-LTE? What will be its impact in the mobile world? What are its implications for test engineers working in device development? |
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| Chip startup keeps MPEG-4 power budget to trickle
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2001-05-16 |
| This article describes the Luxxon Corp. video processor for cellular 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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Strange modes of transport and other "stuff"
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