1. Haykin S. Cognitive radio: brain-empowered wireless communications. IEEE Journal on Selected Areas in Communications, 2005, 23(2): 201-220
2. Wang Y C, Hu Z Y, Wang B, et al. Subcarrier allocation algorithm for OFDM cognitive radio systems. Journal of Chongqing University of Posts and Telecommunications: Natural Science, 2010, 22(5): 583-587 (in Chinese)
3. Wang Y, Xu W J, Yang K W, et al. Optimal energy-efficient power allocation for OFDM-based cognitive radio networks. IEEE Communications Letters, 2012, 16(9): 1420-1423
4. Ngo D T, Tellambura C, Nguyen H H. Resource allocation for OFDMA-based cognitive radio multicast networks with primary user activity consideration. IEEE Transactions on Vehicular Technology, 2010, 59(4): 1668-1679
5. Xu W J, Niu K, Lin J R, et al. Resource allocation in multicast OFDM systems: lower/upper bounds and suboptimal algorithm. IEEE Communications Letters, 2011, 15(7): 722-724
6. Hou F, Cai L X, Ho P, et al. A cooperative multicast scheduling scheme for multimedia services in IEEE 802.16 networks. IEEE Transactions on Wireless Communications, 2009, 8(3): 1508-1519
7. Lee J, Lim Y M, Kim K, et al. Energy efficient cooperative multicast scheme based on selective relay. IEEE Communications Letters, 2012, 16(3): 386-388
8. Bansal G, Hossain M J, Bhargava V K. Optimal and suboptimal power allocation schemes for OFDM-based cognitive radio systems. IEEE Transactions on Wireless Communications, 2008, 7(11): 4710-4718
9. Weiss T, Hillenbrand J, Krohn A, et al. Mutual interference in OFDM-based spectrum pooling systems. Proceedings of the IEEE 59th Vehicular Technology Conference (VTC-Spring’04): Vol 4, May 17-19, 2004, Milan, Italy. Piscataway, NJ, USA: IEEE, 2004: 1873-1877
10. Boyd S, Vandenberghe L. Convex optimization. Cambridge, UK: Cambridge University Press, 2004
11. Afolabi R O, Dadlani A, Kim K. Multicast scheduling and resource allocation algorithms for OFDMA-based systems: a survey. IEEE Communications Surveys and Tutorials, 2013, 15(1): 240-254 |