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Proportional fair-based joint subcarrier and power allocation in relay-enhanced orthogonal frequency division multiplexing systems

Proportional fair-based joint subcarrier and power allocation in relay-enhanced orthogonal frequency division multiplexing systems

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  • Author(s): B. Fan 1 ; W. Wu 1 ; K. Zheng 1 ; W. Wang 1
    • View affiliations
    • Affiliations: 1: Wireless Signal Processing and Network Lab, Key Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts & Telecommunications, Beijing, People's Republic of China
  • Source: Volume 4, Issue 10, 2 July 2010, p. 1143 – 1152
    DOI:  10.1049/iet-com.2009.0617 , Print ISSN 1751-8628, Online ISSN 1751-8636
© The Institution of Engineering and Technology
Published

There has emerged lots of interests in the resource allocation of the relay-enhanced orthogonal frequency division multiplexing (OFDM) system. Most of the existing research works are with the aim to maximise the transmit rate of the system. However, few of them have taken into account the fairness requirements. In order to achieve the trade-off between the system transmit rate and user fairness, this study originally studies the optimality of proportional fairness (PF) in a downlink relay-enhanced OFDM system, where one source communicates with multiple destinations by the aid of one or many relays. We investigate the joint subcarrier and power allocation problem with PF constraint. Firstly, the resource allocation problem is formulated. Then, the problem is studied in the framework of concave maximisation. By using mathematical decomposition techniques, the optimisation problem is decomposed into multiple-layer subproblems which can be resolved efficiently. With this method, a cross-layer algorithm is derived to achieve the near optimal solution. Finally, numerical results are illustrated. Compared to the existing schemes, our proposed algorithm can both maximise the sum of logarithmic per user average transmit rate and enhance the system transmit rate.

Inspec keywords: resource allocation; concave programming; relays; radio networks; OFDM modulation

Other keywords: power allocation problem; proportional fair-based joint subcarrier; resource allocation; cross-layer algorithm; concave maximisation; relay-enhanced orthogonal frequency division multiplexing systems; optimisation problem; multiple-layer subproblems; downlink relay-enhanced OFDM system; fairness requirements; PF constraint; mathematical decomposition techniques; multiple destinations; proportional fairness

Subjects: Radio links and equipment; Modulation and coding methods; Optimisation techniques

References

    1. 1)
      • X. Wang , K. Kar . Cross-layer rate optimization for proportional fairness in multihop wireless networks with random access. IEEE J. Sel. Areas Commun. , 8 , 1548 - 1559
    2. 2)
    3. 3)
      • Mohr, W., Luder, R., Mohrmann, K.H.: `Data rate estimates. range calculations and spectrum demand for new elements of system beyond IMT-2000', Proc. fifth Int. Symp. on Wireless Personal Multimedia Communications, October 2002, Hawaii, USA, p. 37–46.
    4. 4)
    5. 5)
      • 3GPP TR 36.814 v1.4.1: ‘Further advancements for E-UTRA physical layer aspects (Release 9)’, September 2009.
    6. 6)
      • Hammerstrom, I., Wittneben, A.: `On the optimal power allocation for nonregenerative OFDM relay links', Proc. IEEE Int. Conf. on Communications 2006 (ICC'06), June 2006, Istanbul, Turkey, p. 4463–4468.
    7. 7)
      • Herdin, M.: `A chunk based OFDM amplify-and-forward relaying scheme for 4G mobile radio systems', Proc. IEEE Int. Conf. on Communications 2006 (ICC'06), June 2006, Istanbul, Turkey, p. 4507–4512.
    8. 8)
    9. 9)
      • Calvo, E., Vidal, J., Fonollosa, J.R.: `Resource allocation in multihop OFDMA broadcast networks', Proc. IEEE Eighth Workshop on Signal Processing Advances in Wireless Communications, June 2007, Helsinki, Finland, p. 1–5.
    10. 10)
    11. 11)
      • Y. Wei , M. John . Constant-power waterfilling: performance bound and low-complexity implementation. IEEE Trans. Commun. , 1 , 23 - 28
    12. 12)
      • G. Li , H. Liu . Resource allocation for OFDMA relay networks with fairness constraints. IEEE J. Sel. Areas Commun. , 11 , 2061 - 2069
    13. 13)
      • S. Boyd , L. Vandenberghe . (2004) Convex optimization.
    14. 14)
      • Zhang, J., Zhang, Q., Shao, C., Wang, Y., Zhang, P., Zhang, Z.: `Adaptive optimal transmit power allocation for two-hop non-regenerative wireless relay system', IEEE Vehicular Technology Conf. 2004 fall (VTC'04-fall), September 2004, Los Angeles, USA, p. 26–29.
    15. 15)
      • W. Wang , S. Yang , S. Yang . Optimally joint subcarrier matching and power allocation in OFDM multihop system. EURASIP J. Adv. Signal Process. , 1 - 8
    16. 16)
      • B. Can , M. Portalski , H. Lebreton , S. Frattasi . Implementation issues for OFDM-based multihop cellular networks. IEEE Commun. Mag. , 9 , 74 - 81
    17. 17)
      • I. Hammerstrom , I. Wittneben . Power allocation schemes for amplify-and-forward MIMO-OFDM relay links. IEEE Trans. Wirel. Commun. , 8 , 2798 - 2802
    18. 18)
      • C.S. Bae , D.H. Cho . Fairness-aware adaptive resource allocation scheme in multihop OFDMA systems. IEEE Commun. Lett. , 2 , 134 - 136
    19. 19)
      • Luc, V., Rodolfo, T.D., Jérôme, L., Abdellatif, Z.: `Power allocation for OFDM transmission with DF relaying', Proc. IEEE Int. Conf. on Communications 2008 (ICC'08), May 2008, Beijing, China, p. 3795–3800.
    20. 20)
      • Y. (Geoffrey)Li , G.L. Stuber . (2006) Orthogonal frequency division multiplexing for wireless communucations.
    21. 21)
      • K. Megumi , P. Petar , D. Joachim . Proportional fairness in multi-carrier system: upper bound and approximation algorithms. IEEE Commun. Lett. , 6 , 462 - 464
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