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Challenges in Designing a New Modulation Scheme for LTE

February 8, 2010 7:30 am | Comments

Developing the LTE uplink, especially the receiver for the base station, requires complex design approaches and a significant capability in test systems. By Tim Fowler, Cambridge Consultants Ltd. click to enlarge Figure 1. Functional test equipment.

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More than Residential: Femtocell Deployment Beyond the Home

February 8, 2010 7:30 am | Comments

There is great potential for ‘greater femtocells' to improve mobile coverage and capacity outside the home environment. By Rupert Baines, picoChip, Inc. Femtocells are now a commercial reality. Launches by AT&T and Vodafone, amongst others, have brought femtocells into the consumer sphere.

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Wireless Basestation Design Challenges Using High-Speed, 16-bit ADCs

February 8, 2010 7:30 am | Comments

By Josh Carnes, National Semiconductor Corporation click to enlarge Figure 1. Block diagram of an IF sampling subsystem within a communications receiver. Cutting-edge 16-bit, high-speed analog-to-digital converters (ADC) can offer the very high dynamic range and low distortion levels required to meet today's most demanding wireless communications standards.

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Next Generation Wireless IP Networking Applications

February 8, 2010 7:30 am | Comments

IPSec's growing importance in ensuring security and reliability in new networks By Asaf Shen, Discretix Inc. Internet Protocol Security (IPSec) provides security at the network layer of the protocol stack. By using IPSec, protection is offered to all IP packets regardless of the protocols and applications running in the upper layers of the protocol stack.

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LTE Femtocell Roadmap from Concept to Reality

February 8, 2010 7:30 am | Comments

The LTE femtocell stands to serve as a key weapon in the mobile operator arsenal. By Todd Mersch, Continuous Computing click to enlarge Figure 1. Putting the puzzle together, integrated LTE femtocell silicon. The market is buzzing about the critical role of "small cells" in Long Term Evolution (LTE) deployments – femtocells, picocells and microcells.

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Base Station Technologies and Trends

February 8, 2010 7:29 am | Comments

LTE will bring changes to base station design, from both the hardware and software perspective, giving operators challenges as they prepare for technology trials. What do you feel is the greatest challenge today in deploying base stations and how can designers address it? By Frank Ditore, ESL/SystemVue Product Manager, Agilent EEsof EDA Multi-format, multi-band radios are quickly reaching maturity in the commercial wireless infrastructure market.

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LEDs

February 8, 2010 7:29 am | Comments

All indications are that LED backlights will be the preferred light source in mobile applications in 2011, representing a significant growth opportunity for OEMs and the entire backlight and panel supply chain. Do you see the role of LEDs in wireless products changing as the technology matures? By Vandana Lokeshwar, Technical Marketing Manager, Newark Attention is now shifting away from achieving raw light output that matches incandescent bulbs, to increasing the number of lumens per electrical watt supplied.

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Network Operator Acceptance Testing of LTE Devices

February 8, 2010 7:29 am | Comments

The (new/old) challenges in accelerating LTE device time-to-market. By Konstantinos Stavropoulos, Anite click to enlarge Figure 1. A representative set of lab acceptance tests that 2G/3G operators have considered. The use of wireless devices, whether handsets or data cards, has increased substantially during the last few years.

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Building an FPGA-based SoC Framework for LTE Baseband Designs

February 8, 2010 7:28 am | Comments

By Akshaya Trivedi, Altera Corporation Figure 1. SoC framework and infrastructure. Radio Access Networks (RANs) are undergoing an architecture change to an all-IP flat network to reduce network deployment costs as well as to offer rich mobile applications and services at a lower end-to-end latency.

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Transmitter RFIC Integration for Next Generation Wireless Infrastructure Radios

February 8, 2010 7:28 am | Comments

Leveraging highly integrated RFIC designs and high dynamic range converters helps meet the challenges of next-generation base stations. By Phillip Halford and Ed Balboni, RF Group, Analog Devices, Inc. click to enlarge Figure 1.

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LTE: The Insatiable Need for Bandwidth Drives Architectural Change

February 2, 2010 10:14 am | Comments

By Manuel Uhm and Mark Quartermain, Xilinx The baseband processing function represents a key area of product differentiation for Telecommunications Equipment Manufacturers (TEMs). However, the advent of 3.9/4G systems poses a difficult challenge to TEMs, as they struggle to evolve traditional DSP-centric channel cards to meet a new set of technical and commercial challenges.

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Wireless Base Stations Benefit from Signal Compression

February 2, 2010 6:17 am | Comments

For deployments by a single operator, wireless repeater systems offer more cost effective fiber transport costs. By Allan Evans, VP of Marketing, Samplify Systems ABI Research predicts that revenues for distributed antenna systems and in-building wireless systems will exceed $15B by 2013.

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Designing a Wireless Heart Rate Monitor with Remote Data Logging

January 7, 2010 10:58 am | Comments

The current generation of monitors are portable heart rate sensors that have found their way into general purposes for activities such as exercise and sports. While these devices are useful for individual purposes, they do not facilitate use by a coach or manager. By Archana Yarlagadda, Cypress Semiconductor click to enlarge Figure 1.

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Wireless Sensor Networks Expand the Reach of Wireless Technology

December 18, 2009 10:55 am | Comments

Want to learn more about how design engineers are addressing the challenges of Wireless Sensor Networks? Read on! By Nicholas Butler, Wireless Sensor Networks, National Instruments click to enlarge Figure 1. Technology adoption lifecycle from Crossing the Chasm, Geoffrey A.

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Opening Up The Art of Low Noise

December 18, 2009 10:55 am | Comments

By Vandana Lokeshwar, Newark Engineers need to consider op-amp noise in designs for an increasing variety of applications. Today's world is challenging engineers to do more with less; to create new products that will help users improve aspects such as productivity or quality of life while consuming fewer resources such as fuel, finance or time.

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