Resource Allocation for OFDMA Two-Hope Cooperative Cellular Networks: Considering QoS and Fairness Constraints

Subject Areas : Renewable energy

Hemed Bani Zaman ¹ ( Assistant Professor - Islamic Azad University of Jahrom )

Received: 2013-12-30 Accepted : 2014-04-24 Published : 2014-06-01

Keywords: Quality of Service, Fairness, Dynamic resource allocation, Multi-user Orthogonal Frequency Division Multiplexing, Cooperative Relaying,

Abstract :

Abstract – Joint bit allocation, relay selection and subcarrier assignment are critical for achieving full benefits of OFDM-based cooperative relay networks. In this paper, first such a problem is studied in a dual hop OFDMA cooperative network consisting in multi source nodes, multiple decode-and-forward (DF) relays and a single destination node. The aim is to minimize overall transmission power under the bit-error-rate (BER) and data rate constraints. However, the optimal solution to the optimization problem is computationally complex to obtain and may be unfair. Assuming knowledge of the instantaneous channel gains for all links in the entire network, an iterative three-step resource allocation algorithm with low complexity is proposed. It performs the privileged user selection based on fairness criterion first, and then allocates subcarrier-relay with the given constraints. Finally, power and bit are assigned to the selected subcarriers based on the water-filling algorithm. In order to guarantee the fairness of users, several fairness criteria are also proposed to provide attractive trade-offs between network performance (i.e. overall transmission power, average network lifetime and average outage probability) and fairness to all users. Numerical studies are conducted to evaluate the performance of the proposed algorithm in two practical scenarios. Simulation results show that the proposed allocation algorithm achieves an efficient trade-off between network performance and fairness among users.

References:

[1] A. Sendonaris, E. Erkip, B. Aazhang, "User cooperation diversity: Part I system description", IEEE Trans. on Commun., Vol. 51, pp. 1927-1938, Nov. 2003.

[2] A. Sendonaris, E. Erkip, B. Aazhang, "User cooperation diversity: Part II implementation aspects and performance analysis", IEEE Trans. on Commun., Vol. 51, pp. 1939–1948, Nov. 2003.

[3] J.N. Laneman, D.N.C. Tse, G.W. Wornell, "Cooperative diversity in wireless networks: Efficient protocols and outage behavior", IEEE Trans. on Inform. Theory, Vol. 50, pp. 3062–3080, Dec. 2004.

[4] G. Kramer, M. Gastpar, P. Gupta, "Cooperative strategies and capacity theorems for relay networks", IEEE Trans. on Inform. Theory, Vol. 51, pp. 3037–3063, 2005.

[5] B. Maham, A. Hjørungnes, M. Debbah, "Power allocations in minimum-energy SER constrained cooperative networks", Annals of telecommunications, Vol. 64, pp. 545-555, 2009.

[6] IEEE802.16e, "IEEE standard for local and metropolitan area networks part 16 and amendment 2," IEEE, Feb. 2006.

[7] H. Ekstrom, A. Furuskar, J. Karlsson, M. Meyer, S. Parkvall, J.Torsner, M. Wahlqvist, "Technical solutions for the 3G long-term evolution", in IEEE Commun. Mag. Vol. 44, pp. 38-45, 2006.

[8] B. Gui, L. Dai, J. Leonard J. Cimini, "Selective relaying in cooperative OFDM systems: Two-hop random network", In Proc. of WCNC'08, Las Vegas, pp. 996-100, 2008.

[9] B. Gui, J.L.J. Cimini, "Bit loading algorithms for cooperative OFDM systems", EURASIP Journal on Wireless Communications and Networking, Vol. 2008, 2008.

[10] H. Mu, M. Tao, W. Dang, Y. Xiao, "Joint subcarrier-relay assignment and power allocation for decode-and-forward multi-relay OFDM systems", In Proc. of ChinaCom'09, Xi'an, China, pp. 26-28, 2009.

[11] W. Dang, M. Tao, H. Mu, J. Huang, "Subcarrier-pair based resource allocation for cooperative multi-relay OFDM systems", IEEE Trans. on Wireless Commun., Vol. 9, pp. 1640-1649, May 2010.

[12] IEEE802.16j, "IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for fixed and mobile broadband wireless access systems - multihop relay specification", IEEE, Mar. 2006.

[13] B. Gui, L. Dai, J.L.J. Cimini, "OFDM for cooperative networking with limited channel state information", In Proc. of Milcom, Washington D.C., pp. 1-6, 2006.

[14] I. Hammerstrom, A. Wittneben, "On the optimal power allocation for nonregenerative OFDM relay links", In Proc. of IEEE ICC’06, pp. 4463-4468, 2006.

[15] I. Hammerstrom, A. Wittneben, "Power allocation schemes for amplify-and-forward MIMO-OFDM relay links", IEEE Trans. on Wireless Commun., Vol. 6, pp. 2798-2802 Aug. 2007.

[16] L. Dai, B. Gui, J. Leon, J. Cimini, "Selective relaying in OFDM multihop cooperative networks", In Proc. of WCNC'07, Hong Kong, pp. 963-968, 2007.

[17] J. Jang, K.B. Lee, "Transmit power adaptation for multiuser OFDM systems", IEEE J. Select. Areas Commun., Vol. 21, pp. 171-178, Feb. 2003.

[18] G. Li, H. Liu, "Resource allocation for OFDMA relay networks with fairness constraints", IEEE J. Sel. Areas in Commun., Vol. 24, pp. 2061-2069, Nov. 2006.

[19] T.C. Ng, W. Yu, "Joint optimization of relay strategies and resource allocations in a cooperative cellular Network", IEEE J. Sel. Areas in Commun., Vol. 25, pp. 328-339, Feb. 2007.

[20] H. Li, H. Luo, X. Wang, C. Li, "Throughput maximization for OFDMA cooperative relaying networks with fair subchannel allocation", In Proc. of WCNC, pp. 1-6, 2009.

[21] Z. Han, T. Himsoon, W.P. Siriwongpairat, K.J.R. Liu, "Resource allocation for multiuser cooperative OFDM networks: Who helps whom and how to cooperate", IEEE Trans. on Veh. Technol., Vol. 58, pp. 2378-2391, June 2009.

[22] S. Catreux, P. Driessen, and L. Greenstein, "Data throughputs using multiple-input multiple-output (MIMO) techniques in a noise-limited cellular environment", IEEE Trans. on Wireless Commun., Vol. 1, pp. 226-239, Apr. 2002.

[23] R. Fischer, J.B. Huber, "A new loading algorithm for discrete multitone transmission", In Proc. of IEEE Globecom., London, UK., 1996, pp. 724-728.

[24] J. Gross, M. Bohge, "Dynamic mechanisms in OFDM wireless systems: A survey on mathematical and system engineering contributions", Tech. Rep. TKN-06-001, Telecommunication Networks Group, Technische University, Berlin May 2006.

[25] S. Boyd, L. Vandenberghe, Convex optimization: Cambridge University Press, 2004.

[26] K. Kim, H. Kim, Y. Han, S. L. Kim, "Iterative and greedy resource allocation in an uplink OFDMA system", In Proc. of the international symposium on personal, indoor and mobile radio communications, 2004, pp. 2377–2381.

[27] C.Y. Wong, R.S. Cheng, K.B. Letaief, R.D. Murch, "Multiuser OFDM with adaptive subcarrier, bit, and power allocation", IEEE J Sel Areas Commun., Vol. 17, pp. 1747–1758, 1999.

[28] L. Dai, W. Chen, J. Leonard, J. Cimini, "Fairness Improves throughput in Energy-Constrained Cooperative Ad-Hoc Networks", IEEE Trans. on Wireless Commun., Vol. 8, pp. 3679-3690, July 2009.

[29] J.X. Ding, Z. Zhou, "A suboptimal multiple access scheme for multiuser OFDM system", Journal of Beijing University of Posts and Telecommunications, Vol. 26, pp. 33-36, 2003.

[30] H. Banizaman, S.M.T. Almodarresi, "Fairness based dynamic multi-user resource allocation in cooperative OFDMA systems", In Proc. of IEEE ISCC'10 Italy, pp. 365 - 371, 2010.