|| NTT DOCOMO. Update of E-UTRA and IMT-Advanced Re- quirements, January 2009.|
 Al-Jaradat Huthaifa and Sandrasegaran Kumbesan. Survey on the Research Challenges of Radio Resource Management in LTE- A and the Current Proposed Solutions for these Challenges. IN- TERNATIONAL JOURNAL OF COMPUTERS & TECHNOL- OGY, 7(3):626–637, June 2013.
 Y. Subramanyam and Y. Venkateswarlu. WiMAX Base Station
Scheduling Algorithms. 2009.
 Lingjia Liu and Jianzhong Zhang. Proportional fair scheduling for multi-cell multi-user mimo systems. In 2010 44th Annual Con- ference on Information Sciences and Systems (CISS), pages 1–6. IEEE, March 2010.
 Emre Telatar. Capacity of Multi-antenna Gaussian Channels.
European Transactions on Telecommunications, 10(6):585–595, November 1999.
 Chakchai So-In, Raj Jain, and Abdel-Karim Tamimi. Schedul- ing in IEEE 802.16e mobile WiMAX networks: key issues and a survey. IEEE Journal on Selected Areas in Communications,
27(2):156–171, February 2009.
 3GPP TS 23.203 V11.8.0. Technical Specification Group Services and System Aspects. Policy and charging control architecture (Re- lease 11), December 2012.
 Alexander Sayenko, Olli Alanen, Juha Karhula, and Timo Ham¨alainen. Ensuring the QoS requirements in 802.16 schedul- ing. In Proceedings of the 9th ACM international symposium on Modeling analysis and simulation of wireless and mobile systems
- MSWiM ’06, page 108, New York, New York, USA, October
2006. ACM Press.
 Honghai Zhang, Narayan Prasad, and Sampath Rangarajan.
MIMO downlink scheduling in LTE systems. 2012 Proceedings
IEEE INFOCOM, pages 2936–2940, March 2012.
 R. Knopp and P.A. Humblet. Information capacity and power control in single-cell multiuser communications. In Proceedings IEEE International Conference on Communications ICC ’95, vol- ume 1, pages 331–335. IEEE, 1995.
 D. Aktas and H. El Gamal. Multiuser scheduling for MIMO wire- less systems. 2003 IEEE 58th Vehicular Technology Conference.
VTC 2003-Fall (IEEE Cat. No.03CH37484), (2):1743–1747 Vol.3,
 T.F. Maciel and A. Klein. On the Performance, Complexity, and Fairness of Suboptimal Resource Allocation for Multiuser MIMO–OFDMA Systems. IEEE Transactions on Vehicular Tech- nology, 59(1):406–419, January 2010.
 Ian F. Akyildiz, Won-Yeol Lee, Mehmet C. Vuran, and Shantidev Mohanty. NeXt generation/dynamic spectrum access/cognitive radio wireless networks: A survey. Computer Networks,
50(13):2127–2159, September 2006.
 Songsong Shi, Chunyan Feng, and Caili Guo. A Resource Schedul- ing Algorithm Based on User Grouping for LTE-Advanced System with Carrier Aggregation. In 2009 International Symposium on Computer Network and Multimedia Technology, pages 1–4. IEEE, December 2009.
 Yao-Liang Chung, Lih-Jong Jang, and Zsehong Tsai. An efficient downlink packet scheduling algorithm in LTE-Advanced systems with Carrier Aggregation. In 2011 IEEE Consumer Communica- tions and Networking Conference (CCNC), pages 632–636. IEEE, January 2011.
 Jiatian Liang, Feng Li, Brian Krongold, and Jamie Evans. Trans- mission mode selection in a heterogeneous network using oppor-
tunistic beamforming. In 2013 IEEE Global Communications
Conference (GLOBECOM), pages 3802–3808. IEEE, December
 3GPP TS 36.211 V11.1.0. Evolved Universal Terrestrial Radio Access. Physical Channels and Modulation (Release 11), Decem- ber 2012.
 Q.H. Spencer, A.L. Swindlehurst, and M. Haardt. Zero-Forcing Methods for Downlink Spatial Multiplexing in Multiuser MIMO Channels. IEEE Transactions on Signal Processing, 52(2):461–
471, February 2004.
 J.G. Andrews, R.W. Heath, and B.L. Evans. Low complexity user selection algorithms for multiuser MIMO systems with block diag- onalization. IEEE Transactions on Signal Processing, 54(9):3658–
3663, September 2006.
 Kyuhwan Kwak, Hyewon Lee, Hui Won Je, Jongwoo Hong, and Sunghyun Choi. Adaptive and Distributed CoMP Scheduling in LTE-Advanced Systems. In 2013 IEEE 78th Vehicular Technology Conference (VTC Fall), pages 1–5. IEEE, September 2013.
 Runhua Chen, Zukang Shen, Jeffrey G. Andrews, and Robert W.
Heath. Multimode Transmission for Multiuser MIMO Systems With Block Diagonalization. IEEE Transactions on Signal Pro- cessing, 56(7):3294–3302, July 2008.
 Xia Chen, Honglin Hu, Haifeng Wang, Hsiao-Hwa Chen, and M. Guizani. Double proportional fair user pairing algorithm for uplink virtual MIMO systems. IEEE Transactions on Wireless Communications, 7(7):2425–2429, July 2008.
 3GPP TSG-RAN1 #46 R1-062052. UL system analysis with
SDMA, Tallinn, Estonia, Aug. 2006.
 William R. Hawe Rajendra K. Jain, Dah-Ming W. Chiu. A quan- titative measure of fairness and discrimination for resource alloca- tion in shared computer systems. Technical report, DEC Research Report TR-301., 1984.