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The Path To 4G Will Take Many Turns A race is going on right now and it's a heated one. It's a race to the next generation of untethered communications—4G mobile broadband wireless. The prize for reaching the finish line first or even finishing at all could be huge. Yet that finish line keeps moving, as the fourth generation (4G) isn't yet fully defined. In fact, spectrum won't be allocated until 2007. Standards probably won't be complete until the year after that. Right now, though, many teams across the globe are... — Noah Schmitz March 2005 LCDs Enjoy Flexible Power-Up Sequencing For many systems, liquid-crystal displays (LCDs) are a large part of the bill of materials (BOM). In some cases, more than 80% of the entire system cost is that of the LCD panel (e.g., high-definition televisions or HDTVs). LCDs also are a major factor in a consumer's perceived quality perspective. If the LCD begins to fail, the end customer will associate the system and its manufacturer with poor quality. Clearly, safeguarding the LCD component is a critical aspect of these system... — Bart Borosky , et al. March 2005 Metrics And Methods Bring VoWLAN Success Mobile phones have been a runaway success for two decades. Over the years, however, the cellular market has stabilized. Can Wi-Fi give the cell-phone industry a boost? The IEEE 802.11-based Wi-Fi data-networking technology has penetrated the small-office/home-office (SOHO) market. Now, it is expanding rapidly into the enterprise and public-access markets. Wi-Fi is well suited to carry packetized voice, such as Voice over IP. It also can offer cellular users better indoor coverage at a... — Fanny Mlinarsky February 2005 FPGAs Build Bridges To Wireless Connectivity The need for wireless connectivity in embedded systems is growing. In general, connectivity is becoming widespread as consumers and enterprises alike become accustomed to having continual access to information resources. As a result, information appliances like PDAs are adding capabilities for voice and data transmission. This connectivity allows more traditional embedded systems to report information to a central clearinghouse and obtain information from outside sources. In addition,... — Bernhard Andretzky February 2005 Virtual Prototypes Cut Software Bottleneck As the software content in today's 2.5G and 3G phones rapidly increases, timely software development is becoming critical for product success. The traditional development flow—in which software design isn't started until after hardware design is complete or nearly complete—simply breaks down. The resulting design cycle is too long for the competitive wireless market. In addition, dealing with the hardware-software interaction after most of the hardware has been defined can yield... — Thomas Anderson , et al. February 2005 WLAN Testing Relies On Controlled RF The wireless enterprise environment operates under very different conditions than wired networks. As a result, this environment requires a fresh outlook on testing. For wireless LANs (WLANs) to succeed in the enterprise, developers must rely on system-level test solutions. Such solutions must produce repeatable outcomes, scale beyond a single device to a network, and provide systems designers with an automated solution that will decrease the cost per test. As discussed last month... — Graham Celine January 2005 TV On The Go Is The New Mobile Experience As the market awaits the latest 3G phones, it's clear that consumers are eagerly anticipating new mobile-entertainment experiences. Mobile digital-broadcast TV is promising to deliver the big bang that will excite consumers worldwide. It marries two of history's hottest technological innovations: television and wireless telephones. The task that confronts wireless OEMs is to develop TV-enabled handsets that users will like. Limited offerings of analog broadcast television are now... — Bill Krenik January 2005 Mesh Networking Smooths Traffic Flow Two major problems afflict automobile-based transportation systems in the U.S. and around the world: traffic accidents and congestion. About half a million people are killed each year in traffic accidents worldwide. While Americans make up only 3% of the world's population, they account for almost 9% of those traffic fatalities. In 2003, more than 42,000 Americans died in traffic-related accidents. Similarly, 42,000 or more died the year before that.1 In fact, the total number of... — Donald Wilkins January 2005 Effective WLAN Testing Begins To Emerge Wireless-local-area-network (WLAN) technology first became prevalent in the small-office/home-office (SOHO) market. In that forgiving environment, convenience often outweighs performance concerns. But as 802.11 technology extends to the enterprise, wireless-system designers and developers must face the enterprise market's performance-based realities. Enterprise WLAN networks are evolving to support business-critical data and voice applications, large numbers of network users, and diverse... — Graham Celine , et al. December 2004 Access Isn't Always The Killer Application A great number of usage models fall under the "wireless" umbrella. For some users, access to a network infrastructure is the killer application. For others, the "killer app" is the capability to communicate independently between devices within a... — Charles Knutson December 2004 Integration Is A Must For Future Handsets There appears to be no end to the functionality that can be added to the next-generation mobile phone. This trend is partially driven by network operators. After all, they can realize a higher annual revenue per user by offering handsets with... — Jerry Loraine November 2004 Automatic Antenna Tuning Saves Power In recent years, the world has welcomed an increasing number of short-range, license-free wireless applications that operate in the Industrial Scientific Medical (ISM) band. Among these applications are keyless entry, tire-pressure monitoring, door... — Ferenc Mernyei November 2004 RF And Digital Tests Unite Against BER In today's wireless-receiver architecture, an evolving trend places the digital-signal-processor (DSP) subsystem closer to the radio-frequency (RF) antenna. This trend highlights a need for innovative RF/digital-verification solutions. Many... — Scott Ferguson , et al. October 2004 Oversampling UART Reduces RF Noise In recent years, wireless communications have grown to encompass applications like remote control, remote sensing, and wireless local-area networks (WLANs). The data rates of such implementations vary from a few hundred to several million bits per... — Eli Flaxer October 2004 FPGAs Help Software-Defined Radios Adapt With the proliferation of wireless standards, future devices will need to support multiple air interfaces and modulation formats. Software-defined-radio (SDR) technology enables such functionality. It uses a reconfigurable hardware platform across... — Deepak Boppana , et al. September 2004 Quality Devices Deserve Good Sound As audio quality becomes increasingly important in electronic systems, many more designers must become skilled in the "art" of analog and mixed-signal design. Some designers find this trend intimidating. In truth, though, an amplifier is still just... — Julian Hayes July/August 2004 Testing Braces Itself For Voice Over Wi-Fi ASWi-Fi increasingly permeates our lives, it is forever changing the way that we work and communicate. Corporate IT managers can no longer ignore the influx of mobile PCs, PDAs, phones, and other devices. After all, such devices improve the... — Graham Celine , et al. July/August 2004 Will RF Detectors Measure Up To 3G? Many systems need to measure radio frequency (RF) power. Some examples include communications transceivers, instrumentation, industrial controls, and radar. Sometimes, these RF-power measurements are required to assure compliance with... — Rick Cory , et al. July/August 2004 Cell Phones Demand Better Battery Life Just a few short years ago, the expectations of cell-phone users centered around one capability: being able to reliably conduct voice calls while they were away from a wired telephone set. Since then, impressive technological advances have been... — Walter Croce June 2004 Are Wireless Devices Too Hot To Handle? Cooling electronic enclosures was once a fairly straightforward job. First, one had to calculate the maximum heat that was dissipated in the enclosure. The next step was to calculate the maximum allowable temperature rise above the maximum expected... — Dave Keller  prev. page
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