Nancy Maas Editor-in-Chief The Mobile World Congress Show (MWC) recently took place in Barcelona, Spain. Every year this show has its "hot topics" that attendees just can't seem to get enough of, and this year was no exception. Conversations focused on handsets, Long Term Evolution (LTE), Location-Based Services (LBS), social networking, application stores and mobile advertising.
The introduction of new radio technoloiges, like OFDM and MIMO, in LTE and WiMAX systems has created the need for new types of test equipment. George Reed, Azimuth Systems click to enlarge Figure 1. Three methods of testing transmitter and receiver performance: lab-based, direct cable connectivity, over-the-air testing and lab-based, connection through a channel emulator that simulates real world conditions.
By Danny Tseng, Cypress Semiconductor Designing a platform with modularity in mind is one approach that can shorten design time as well as enable easier feature upgrades. click to enlarge Figure 1. Architecture modularization of a mobile handset.
Consumer Audio Devices from TVs to Docking Stations to Personal Computers Benefit from the Use of FIR Filters in Providing High Quality Audio at a Reasonable Cost By QuickFilter Technologies, Inc. The U.S. market for consumer electronics goods is approximately $161B and growing at a rate of 8% per year (Consumer Electronics Association Digital America 2008).
The recent advent of low-cost FPGAs equipped with high-performance transceivers and DSP blocks will greatly reduce the build and deployment costs of a video broadcast system. By Shakeel Peera, Lattice Semiconductor Corporation click to enlarge Figure 1.
Greater access to digital audio data off-chip presents an opportunity for applying powerful digital enhancement techniques which can improve speaker performance not just for music but also for voice. By Robert Hatfield, Wolfson Microelectronics In some mobile phone architectures, the evolution of speaker drive technology has recently been struggling to make progress.
In order to market Mobile TV and Mobile Video successfully, service providers and technology companies need to target the specific entertainment needs people have when away from home, rather than just assuming that the populace will be willing to sign up regardless. By Mike Green, European Correspondent Wireless Design & Development The DVB-H infrastructure needed to support video transmission has been in place in Europe for over three years now (it was first showcased to the public at the Winter Olympics in Turin, in February 2006, with crowds being able to tap into the video broadcasts of all the different events taking place).
Working closely with the test equipment vendor is required in order to synchronize feature implementation, reference specifications and timely delivery of the test equipment software. By Paul Gooding, Rohde & Schwarz click to enlarge Figure 1.
Grounding and care in layout is the key to keeping noise out of the control circuit and allowing correct operation. Grounding and care in layout is the key to keeping noise out of the control circuit and allowing correct operation. By John Bottrill, Texas Instruments click to enlarge Figure 1.
A receiver's position accuracy is a fundamental challenge of satellite navigation system. As a result, GPS receiver designers must perform a combination of measurements to ensure the device will perform as expected. David A. Hall, National Instruments Geocaching involves discovering various "caches" whose coordinates can be found on the Web and whose contents are located all over the world.
Firmware over-the-air (FOTA) technology makes it possible to detect bugs, defects and design flaws after the handset lands in the subscribers' hands. By Jinsheng Gu, InnoPath Software click to enlarge Simplified FOTA Architecture.
Protecting infotainment dynamic data is essential. The unique advantage of F-RAM guarantees higher availability & performance. By Duncan Bennett, Ramtron International The use of non-volatile ferroelectric RAM (F-RAM) in automotive applications began with airbag applications. This type of safety critical application was click to enlarge Figure 1.
This is part two of a three part series. Read part one By Dr. Michael D. Foegelle, ETS-Lindgren; Kevin Li, Nokia Corp.; Andrew Pavacic, Paul Moller, Motorola, Inc. Defining the Grip An informal survey of advertised handsets on the market revealed that they could generally be separated into two categories by width.
A new modeling methodology combines FPGAs and detailed circuit-level modeling in a design-to-test flow. By Greg Jue and David Leiss, Agilent Technologies click to enlarge Figure 1. This high-level design flow begins with the design of key algorithms which can be quickly evaluated in simulation to verify system performance with just a handful of simulation blocks.
Emulating the way that the human hearing system characterizes and groups the audio stream into sound sources proves to be an extremely efficient and accurate way to suppress both stationary and non-stationary noise. By Lloyd Watts, Founder and CTO, Audience click to enlarge Figure 1a.