DARPA calls for ideas on advanced comm project

The Defense Advanced Research Projects Agency last week released two requests for comments for its Next Generation Communications program.

The technologies that DARPA is developing under the XG program will provide a mechanism for enabling wireless communications systems to access temporarily unused radio frequency spectrum without causing interference with systems and users, according to a DARPA release.

The program released both the XG Vision and the XG Policy Language requests June 10. The XG Vision RFC describes the program's overarching view of adaptive spectrum communications. The XG Policy Language RFC outlines the ways for expressing spectrum access rules in a machine-readable format.

'This is the next step in defining an XG standard for adaptive spectrum access. The policy language provides the ability to decouple policy and engineering in the radio,' said Preston Marshall, DARPA's XG program manager.

'Where today's radios are designed to comply with specific spectrum policies and cannot adapt to new regulatory environments, software-defined radios that implement the policy language can readily adapt to policy changes without redesign,' Marshall added.

The RFCs can be found at www.darpa. DARPA is seeking comments to ensure the widest adoption of the technologies under development.

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