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Welcome to our DesignLine network of web communities. On these sites, we provide practical how-to technical information for engineers and engineering managers involved in
Automotive,audio, DSP, DTV, EDA, Industrial Control, Mobile Handset, Power Management, Programmable Logic,RF,Video, and Wireless networking design. Check out the sites and let us know your thoughts.
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Resource Links
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HOW-TO: Metro/Edge Networking
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Understanding OFDMA, the interface for 4G wireless
Though there is no definition on what separates 3G from 4G systems, there seems to be a consensus forming within the standards bodies with respect to maximum supported data rates. Now, and for good reason, OFDMA is emerging as the air interface of choice to achieve those rates with the necessary spectral efficiency.
InGaP HBT vs CMOS for mobile handset power amplifiers
Bulk CMOS and advanced silicon processes have made huge technical advances but the argument is strong in favor of GaAs to meet the stringent performance needs of the most advanced mobile handsets and wireless networking products.
Defeating turn on overshoot
During the startup process, a common problem is overshooting the output voltage. This is caused by the voltage feedback loop configured as an integrating controller. Learn how to eliminate the turn on overshoot associated with integrated feedback circuits in forward, half-bridge, full-bridge or push-pull converter topologies.
Tip of the Week: Mesh networking radically improves optical-network efficiency--when tools are easy to use
The emergence of simplified ROADM tools allows service providers to provision wavelengths end-to-end via software. DWDM capabilities--and the enormous capacity advantages they offer over competing approaches--are a viable option for more and more network segments.
Facing the challenges of VoIP WLAN (VoWLAN) design: Part 2
In the second of a two part series based on their book "WiFi Telephony," Praphul Chandra and David Lite look at the challenges facing developers of Voice over IP WLAN )VoWLAN) systems. This week: Inherent Fairness Among All Nodes
Program and optimize C code--Part 2
This second of a five-part series shows how to optimize DSP "kernels," i.e., inner loops. It also shows how to write fast floating-point and fractional code.
Overcome challenges in wireless sensor networks
Over the last few years, the emergence of standards-based solutions for low data rate, long battery life wireless communications has dramatically changed the market's perception of the technology. Of the many benefits that a standards-based solution such as Zigbee or IEEE802.15.4, a key advantage is interoperability.
Mathematical package helps in circuit design
Using a mathematical package to help with the evaluation of the operatring characteristics of a circuit can save significant development time and increase manufacturability and yield.
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¤ Looking for the appropriate Industry Association? This comprehensive, up-to-date list will take you to the right Web site for the help you need.
¤ Got a question about a standard? Here are direct links to resources detailing the industry's most important communications standards.
¤ Freshen up on technology, new and old, with these links to interesting and informative tutorials.
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