Ik-Soo Choi, Sang-Jo Yoo, Myunghwan Seo, Chul-Hee Han, Bongsoo Roh, Vol. 12, No. 6, June 29, 2018
10.3837/tiis.2018.06.005

• Cognitive Radio Networks
• common channel
• average angle difference pattern
• system activation signal
• boundary symbol synchronization.

Sang-Jo Yoo, Ju-Tae Jang, Myunghwan Seo, Hyung-Weon Cho, Vol. 11, No. 1, January 29, 2017
10.3837/tiis.2017.01.007

• Cognitive radio network
• common channel
• CR ad-hoc
• secondary system initialization

Ke Yi, Nan Hao, Sang-Jo Yoo, Vol. 5, No. 11, November 28, 2011
10.3837/tiis.2011.11.006

• cognitive radio
• ad-hoc network
• multi-channels
• incumbent systems

Young-Uk Yun, Jae-Kark Choi, Sang-Jo Yoo, Vol. 5, No. 4, April 28, 2011
10.3837/tiis.2011.04.003

• Wireless Sensor Network
• clustering
• Energy Efficiency
• network lifetime