Opportunistic Underlay Transmission in Multi-Carrier Cognitive Radio Systems

  title={Opportunistic Underlay Transmission in Multi-Carrier Cognitive Radio Systems},
  author={Kyuho Son and Bang Chul Jung and Song Chong and Dan Keun Sung},
  journal={2009 IEEE Wireless Communications and Networking Conference},
Underlay transmission in cognitive radio enables a secondary (unlicensed) system to utilize a frequency band of primary (licensed) system as long as the unlicensee interferes less than a certain threshold with the licensee. The secondary system needs to carefully consider not only its own channel to achieve a capacity gain by this sharing spectrum in multicarrier systems, but also the interference channel to reduce interference at the primary receiver. In this paper, we formulate a capacity… CONTINUE READING
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