signalarticles

Turbo Codes Offer Broadcasting At Near-Channel Capacity

September 1999
By Henry S. Kenyon

Engineers are using a new class of algorithms capable of encoding and decoding communications at speeds close to transmission channel maximum capacities, a feat that has eluded engineers since the 1940s when a theoretical limit to channel capacity was first defined. Under development since the early 1990s, these algorithms are now being tested in proof-of-concept devices.

Digital Libraries Extend Longevity of Programmable Communication Tools

September 1999
By Henry S. Kenyon

Internet accessible data libraries are looming as an important element in the continuing evolution of communications devices. By being able to hold a variety of waveform and signal processing algorithms on chips and in databases, these information storehouses give users enhanced flexibility in selecting specific material when and where they need it.

Evolving Procurement Products Transform Business Operations

September 1999
By Maryann Lawlor
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While blazing a trail on the frontier of paperless contracting, the U.S. Defense Department is discovering that a new set of opportunities and challenges emerges from change in the workplace. As in any formidable military operation, its leaders are striving to complete the mission successfully, while gathering information to share with others who are sure to follow the path to more efficient business practices.

Data-Sifting Intelligent Agents Nourish Virtual Environments

October 1999
By Maryann Lawlor
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Sophisticated, pattern-recognizing artificial intelligence agents are solving quandaries faced by organizations that are being inundated by massive amounts of information. The design of these technodrones is based on the characteristics of structures that allow the human body to function. It enables systems administrators, both military and commercial, to monitor and pre-empt network catastrophes and allows corporate leaders to tap available data and take advantage of opportunities.

Low-Power Electronics Advance to Prime Time

October 1999
By Henry S. Kenyon

New production methods allow constructing semiconductors capable of operating at a fraction of the power of existing devices while delivering comparable or superior performance. These new technologies could lead to extremely efficient electronic devices, from handheld computers to tactical radios and missile warheads. The potential also exists for increased processor speeds in both military and civilian communications and computing applications.

Flexible Software Drives Marines' Experimental Battle Laboratory

October 1999
By Henry S. Kenyon

The U.S. Marine Corps Command and Control Battle Laboratory experiment is using modular, easily configured software to achieve visualization and coordination of battlefield radar and communications data. This project provides a picture of ongoing efforts throughout the armed forces to create sophisticated battle management technologies. Designed as a testbed for future air defense and command and control systems, the battle laboratory combines forward-looking new concepts while providing an off-the-shelf hardware and software environment.

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