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Modeling and Analysis for Effective Capacity of a Cross-Layer Optimized Wireless Networks

Authors: Reham A. El-mayet, Hesham M. El-Badawy, Salwa H. Elramly


New generation mobile communication networks have the ability of supporting triple play. In order that, Orthogonal Frequency Division Multiplexing (OFDM) access techniques have been chosen to enlarge the system ability for high data rates networks. Many of cross-layer modeling and optimization schemes for Quality of Service (QoS) and capacity of downlink multiuser OFDM system were proposed. In this paper, the Maximum Weighted Capacity (MWC) based resource allocation at the Physical (PHY) layer is used. This resource allocation scheme provides a much better QoS than the previous resource allocation schemes, while maintaining the highest or nearly highest capacity and costing similar complexity. In addition, the Delay Satisfaction (DS) scheduling at the Medium Access Control (MAC) layer, which allows more than one connection to be served in each slot is used. This scheduling technique is more efficient than conventional scheduling to investigate both of the number of users as well as the number of subcarriers against system capacity. The system will be optimized for different operational environments: the outdoor deployment scenarios as well as the indoor deployment scenarios are investigated and also for different channel models. In addition, effective capacity approach [1] is used not only for providing QoS for different mobile users, but also to increase the total wireless network's throughput.

Keywords: Wireless Networks, Resource Allocation, OFDM, QoS, LTE, cross-layer, effective capacity

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[1] D. Wu and R. Negi, "Effective capacity: a wireless link model for support of quality of service", IEEE Transactions on Wireless Communications, vol. 2, no.4, pp. 630-643, July 2003.
[2] Nan Zhou, Xu Zhu and Yi Huang, "Cross-Layer Optimization with Guaranteed QoS for Wireless Multiuser OFDM Systems," Personal, Indoor and Mobile Radio Communications, IEEE 18th International Symposium PIMRC'07, Athens, pp. 1-5, Sept. 2007.
[3] Nan Zhou, Xu Zhu, Yi Huang and Hai Lin, "Novel Batch Dependant Cross-Layer scheduling for multiuser OFDM systems," IEEE International conference ICC'2008, Beijing, pp.3878~3882, May 2008.
[4] Dzmitry Kliazovich, Michael Devetsikiotis and Fabrizio Granelli, "Formal methods in cross layer modeling and optimization of wireless networks: state of the art and future directions," Handbook of Research on Heterogeneous Next Generation Networking: Innovations and Platforms, IGI global, pp1~24, 2009.
[5] Jia Tang, Xi Zhang, "Cross-Layer-Model Based Adaptive Resource Allocation for Statistical QoS Guarantees in Mobile Wireless Networks," IEEE Transactions on Wireless Communications, vol. 7, no. 6, pp. 2318-2328, June 2008.
[6] J. Tang and X. Zhang, "Cross-Layer Resource Allocation Over Wireless Relay Networks for Quality of Service Provisioning," IEEE J. Sel. Areas Communications, vol. 25, no. 4, pp. 645-657, May 2007.
[7] A. Balasubramanian and Scott L. Miller, "The Effective Capacity of a time Division Downlink Scheduling System," IEEE Transactions on Communications, vol. 58, no. 1, January 2010.
[8] Z. Shen, J. G. Andrews, and B. L. Evans, "Adaptive Resource Allocation in Multiuser OFDM Systems with Proportional Rate Constraints," IEEE Transactions on Wireless Communications, vol.4, pp 2726-2737, 2005.
[9] Andrea Goldsmith, Wireless Communications, Cambridge University, 2005.
[10] Qing Wang, Dapeng Wu and Pingyi Fan, "Effective Capacity of a correlated Nakagami-m Fading Channel," Wireless communications and mobile computing, John Wiley, Feb. 2011.
[11] Gaofei Huang, Guanchi Zhang and Hui Zheng , "QoS-driven resource allocation scheme for the OFDM amplify-and-forward relay system," Wireless Communications, Networking and Mobile Computing (WiCOM), Wuhan, pp. 3878-3882, Sept. 2011.
[12] T. M. Cover and J. A. Thomas, Elements of Information Theory. New York: Wiley, 1991.
[13] V.Erceg, K. V. S. Hari, "Channel Models for Fixed Wireless /networks," Technical Report, IEEE 802.16 Broadband Wireless Access Working Group, January 2001.
[14] "3GPP Long Term Evolution: System Overview, Product Development and Test Challenges," Agilent Technology, available on:, June 2009.
[15] " 3G LTE Tutorial - 3GPP Long Term Evolution," Radio-Electronics, available on: http://www.radioelectronics. com/info/cellulartelecomms/lte-long-term-evolution/3g-ltebasics. php
[16] Nan Zhou, Xu Zhu, Yi Huang and Hai Lin, "Low Complexity Cross- Layer Design with Packet Dependent Scheduling for Heterogeneous Traffic in Multiuser OFDM Systems," IEEE Transactions on Wireless Communications, vol.9, no.6, pp.1912~1923, 2010.