yan, Guo Caili, "A Resource Scheduling Algorithm Based on User Grouping for LTE-Advanced System with Carrier Aggregation," International Symposium on Computer Network and Multimedia Technology, 2009. [7] Guangxiang Yuan, Xiang Zhang, Wenbo Wang, Yang Yang, "Carrier Aggregation for LTE-advanced Mobile Communication Systems," IEEE Communications Magazine Vol. 48 (Issue 2) (2010). [8] Li Chen, Wenwen Chen, Xin Zhang and Dacheng Yang, "Analysis and Simulation for Spectrum Aggre- gation in LTE-Advanced System," IEEE 70th Vehicular Technology Conference, VTC-2009, Fall 2009. [9] Vit Stencel, Andreas Muller and Philipp Frank, "LTE Advanced - A Further Evolutionary Step for Next Generation Mobile Networks," 20th International Conference Radioelektronika, 2010. [10] Y. Wang, K.I. Pedersen, T.B. Sorensen, P.E. Mogensen, "Load Balancing and Packet Scheduling for Multi- Carrier Systems," IEEE Transactions on Wireless Communications Vol. 9 (Issue 5) (2010). Wang Xiaoyong, Xiao Dengkun and Jing Xiaojun, "A Novel Power Allocation Algorithm under CoMP with Carrier Aggregation," 2nd IEEE International Conference on Broadband Network & Multimedia Technology (IC-BNMT '09), 2009. P.E. Mogensen et al., "LTE-Advanced: The Path towards Gigabit/S in Wireless Mobile Communications," 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace & Electronics Systems Technology, 2009. Wireless VITAE 2009. [13] L. Garcia, et al., Comparison of Spectrum Sharing Techniques for IMT-Advanced Systems in Local Area Networks," IEEE 69th Vehicular Technology Conference, VTC-2009 Spring 2009. [14] Y. Wang, K.I. Pedersen, M. Navarro, P.E. Mogensen, T.B. Sorensen, "Uplink Overhead Analysis And Outage Protection For Multi-Carrier LTE-Advanced Systems," IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications, 2009. [15] Y. Wang, K.I. Pedersen, P.E. Mogensen, T.B. Sorensen, "Carrier Load Balancing Methods With Bursty Traffic For LTE-Advanced Systems," IEEE 20th International S