Xiaorong Xu, Yu-Dong Yao, Sanqing Hu, Yingbiao Yao, Vol. 7, No. 12, December 28, 2013
10.3837/tiis.2013.12.005

• Primary users’ cooperation (PU Coop)
• Joint subcarrier and bit allocation
• Signal to interference plus noise ratio (SINR)
• Arith-metric geo-metric (AM-GM) inequality
• Interference power level