J. Mitola and G. Q. Jr. Maguire, "Cognitive radio: making software radios more personal", IEEE Personal Communications, vol. 6, no. 4, pp. 13-18, August 1999.
A. Kaushik, M. Mueller, and F. K. Jondral, "Cognitive Relay: Detecting Spectrum Holes in a Dynamic Scenario", in Proceedings of the Tenth International Symposium on Wireless Communication Systems (ISWCS 2013), Apr. 2013, pp. 1-2.
S. Sharma, T. Bogale, S. Chatzinotas, B. Ottersten, L. Le, and X. Wang, "Cognitive Radio Techniques under Practical Imperfections: A Survey", IEEE Communications Surveys Tutorials, vol. PP, no. 99, pp. 1-1, 2015.
R. Tandra and A. Sahai, "SNR Walls for Signal Detection", IEEE Journal of Selected Topics in Signal Processing, vol. 2, no. 1, pp. 4-17, Feb. 2008.
F. Digham, M.-S. Alouini, and M. K. Simon, "On the energy detection of unknown signals over fading channels", in IEEE International Conference on Communications (ICC), vol. 5, May 2003, pp. 3575-3579 vol. 5.
S. Herath, N. Rajatheva, and C. Tellambura, "Energy detection of unknown signals in fading and diversity reception", IEEE Transactions on Communications, vol. 59, no. 9, pp. 2443-2453, September 2011.
F. Digham, M.-S. Alouini, and M. K. Simon, ""on the energy detection of unknown signals over fading channels"", IEEE Transactions on Communications, vol. 55, no. 1, pp. 21-24, Jan 2007.
S. K. Sharma, S. Chatzinotas, and B. Ottersten, "Spectrum sensing in dual polarized fading channels for cognitive satcoms", in IEEE Global Communications Conference (GLOBECOM), 2012, pp. 3419-3424.
Y.-C. Liang, Y. Zeng, E. Peh, and A. T. Hoang, "Sensing-Throughput Tradeoff for Cognitive Radio Networks", IEEE Transactions on Wireless Communications, vol. 7, no. 4, pp. 1326-1337, April 2008.
A. Kaushik, M. R. Raza, and F. K. Jondral, "On the Deployment of Cognitive Relay as Underlay Systems", in 9th International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), Jun. 2014, pp. 329-334.
M. Ettus, "Ettus research, llc", Online information on USRP board). http://www.ettus. com, 2008.
A. Kaushik, S. K. Sharma, S. Chatzinotas, B. Ottersten, and F. K. Jondral, "Sensing-Throughput Tradeoff for Interweave Cognitive Radio System: A Deployment-Centric Viewpoint", IEEE Transactions on Wireless Communications, vol. 15, no. 5, pp. 3690-3702, May 2016.