NSF Workshop on "Beyond Cognitive Radios"
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The concept of "Software Radio" was introduced in the early 1990s. Since then there has been significant research and development activity on software-defined radios (SDR). An important feature of the SDR vision is its ability to integrate legacy systems with newer and more advanced radio and access technologies. The work on SDR led to the realization that opportunistic spectrum utilization can lead to a dramatic improvement in the capacity of practical wireless networks, and the concept of "Cognitive Radio" was born.
In recent years, the scarcity of radio spectrum and the resulting cost of provisioning wireless services have become an impediment to the growth of the wireless industry. As the services offered by the wireless communications industry continue to expand, so does the need for higher data rates both, instantaneous (to support real-time communication), and aggregated (to support the increasing pool of customers). Indeed, the use of the cellular spectrum has increased impressively in recent years, due to the introduction of new mobile wireless devices, and a large number of applications supported on such devices. Keeping these challenges in mind, a June 2010 Presidential Memorandum issued a call to "create and implement a plan to facilitate research, development, experimentation, and testing by researchers to explore innovative spectrum-sharing technologies".
The workshop on "Beyond Cognitive Radio" was organized with the goal of examining the state of the art in cognitive radios, and identifying research challenges that need to be addressed in future research on cognitive radio systems.
The attendees at the workshop included representatives from academia, industry, and the government. The workshop was held at the Siebel Center for Computer Science at the University of Illinois at Urbana-Champaign on June 13-14, 2011.