Public Release: 

Chandramouli leads DoJ-funded project exploring dynamic spectrum access for public safety

Stevens professor will pursue cognitive radio-based solutions

Stevens Institute of Technology

HOBOKEN, N.J. ¯ The National Institute of Justice, which serves as the research and development arm of the US Department of Justice, has awarded a three-year project grant to Dr. Rajarathnam Chandramouli, Thomas E. Hattrick Chair Associate Professor of Information Systems in the Department of Electrical & Computer Engineering at Stevens Institute of Technology. Chandramouli will serve as Principal Investigator of the project, titled, "Cognitive radio protocols and platform for dynamic spectrum access in public safety bands."

"Recent studies, such as Project SAFECOM, have shown that radio spectrum is fragmented over space and time, leading to inefficient use of radio resources," said Chandrmouli. "Dynamic spectrum access using cognitive or intelligent radios allows users to share dynamically the available spectrum, to maximize spectral efficiency. In this project we propose to research and develop software defined radio-based cognitive radio technologies that facilitate public safety radios to occupy and dynamically release spectrum whenever and wherever they are available in the public safety bands. Protocols for spectrum aggregation to create a broadband connection for supporting quality of service for voice and data applications will be developed."

The proposed protocols will be implemented, tested and demonstrated in a software defined radio platform. Catastrophic loss of wireless links and graceful degradation will be emulated in the test bed to demonstrate the gains that can be achieved using the proposed technology.

"Finally," said Chandramouli, "we believe that this study will help us better understand the pros and cons of the FCC's spectrum policy reform."

Professor Chandramouli is the co-founder of the MSyNC Laboratory at Stevens, and he is an internationally recognized expert in the fields of cognitive radio networks and digital steganography/steganalysis. He serves as the Founding Chair of the IEEE COMSOC Technical Sub-committee on Cognitive Networks and also as a Management Board Member of IEEE SCC 41 that oversees the development of international standards for cognitive networks. Recently he co-founded with Stevens Professor K.P. Subblakshmi and Dr. Helena S. Wisniewski, Stevens' VP for Research & Enterprise Development, the Technogenesis® Company InStream Media LLC, which offers disruptive solutions for the future of embedded, non-invasive dynamic digital advertising, among other applications.


About the National Institute of Justice

The National Institute of Justice (NIJ) is the research, development, and evaluation agency of the US Department of Justice and is dedicated to researching crime control and justice issues. NIJ provides objective, independent, evidence-based knowledge and tools to meet the challenges of crime and justice, particularly at the State and local levels.

The NIJ Director is appointed by the President and confirmed by the Senate. The NIJ Director establishes the Institute's objectives, guided by the priorities of the Office of Justice Programs, the U.S. Department of Justice, and the needs of the field. The Institute actively solicits the views of criminal justice and other professionals and researchers to inform its search for the knowledge and tools to guide policy and practice.

About Stevens Institute of Technology

Founded in 1870, Stevens Institute of Technology is one of the leading technological universities in the world dedicated to learning and research. Through its broad-based curricula, nurturing of creative inventiveness, and cross disciplinary research, the Institute is at the forefront of global challenges in engineering, science, and technology management. Partnerships and collaboration between, and among, business, industry, government and other universities contribute to the enriched environment of the Institute. A new model for technology commercialization in academe, known as Technogenesis®, involves external partners in launching business enterprises to create broad opportunities and shared value. Stevens offers baccalaureates, master's and doctoral degrees in engineering, science, computer science and management, in addition to a baccalaureate degree in the humanities and liberal arts, and in business and technology. The university has a total enrollment of 1,850 undergraduate and 2,980 graduate students, and a worldwide online enrollment of 2,250, with a full-time tenured or tenure-track faculty of 140 and more than 200 full-time special faculty. Stevens' graduate programs have attracted international participation from China, India, Southeast Asia, Europe and Latin America. Additional information may be obtained from its web page at For the latest news about Stevens, please visit

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