Research and Investigation in Advanced Software-Defined Radio Communications Architectures, 10-9403

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Principal Investigators
Thomas C. Untermeyer
Ben A. Abbott
Michael S. Moore
Gary L. Ragsdale
Myron L. Moodie

Inclusive Dates: 07/01/03 - 06/30/04

Background - Software-Defined Radio (SDR) represents an evolving technology that has generated great interest in the wireless communications industry and should provide many opportunities for contracts in the future. Traditionally, radio system designs have incorporated mostly specialized hardware components. This has forced the development of a variety of different and incompatible wireless devices. SDR systems use software to implement functions previously performed by hardware components. Consequently, SDR systems can offer many benefits over previous hardware intensive designs such as multi-mode operation, the use of fewer discrete components, less-expensive product upgrades, over-the-air reconfiguration, increased interoperability, rapid time-to-market, improved spectrum efficiency, increased flexibility, and widespread connectivity.

Approach - To capture immediate contracts with the Government, this project focuses on identifying new and innovative techniques for using current technology to meet the military Joint Tactical Radio System (JTRS) requirements. The JTRS communications program, initiated in 2002 by the JTRS Joint Program Office, defines a family of software programmable radios that will eventually replace a large number of legacy radios. Common modular software contained in JTRS devices will implement waveforms, protocols, encryption, and communications processes. This software is intended to fit within the JTRS Software Communications Architecture (SCA).

Accomplishments - The project team began the program by obtaining JTRS radio specifications, analyzing available hardware and software, and attending Object Management Group (OMG) Software Radio domain special interest group (DSIG) meetings. The project team has also acquired an open-source SCA-compliant Core Framework (CF) implemented in C++ for a Linux platform. The team will next experiment with the implementation of an SCA JTRS radio on an SDR platform.

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