Interference aware resource allocation in orthogonal frequency-division multiple access-based relay networks

Interference aware resource allocation in orthogonal frequency-division multiple access-based relay networks

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
IET Communications — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Adaptive radio resource allocation in a cellular and multiuser orthogonal frequency-division multiple access (OFDMA)-based relay network is studied here. The authors have considered a margin adaptive optimisation problem to minimise the total transmitted power of the base and relay stations subject to the requested data rates of the users. In this study, a novel algorithm is presented for subcarrier allocation to the users with frequency reusing in the network. The interference among users in non-adjacent cells has been considered in the proposed algorithm which results in interference aware power allocation. Tolerable bit error rate is satisfied as quality of service (QoS) factor for each subcarrier. Linear programming approach has been proposed to solve this problem, such that power allocation problem is isolated for each of the subcarriers and total transmitted power is minimised in the network. According to this technique, the cost of interference in the system in terms of the excess consumed power to satisfy QoS constraints can be computed. The gain achieved in the power consumption is demonstrated through the simulations and the results are compared with the previous works.


    1. 1)
    2. 2)
      • Rhee, W., Cioffi, J.M.: `Increase in capacity of multiuser OFDM system using dynamic subchannel allocation', Proc. IEEE VTC, May 2000, 2, p. 1085–1089.
    3. 3)
    4. 4)
    5. 5)
      • Seong, K., Mohseni, M., Cioffi, J.M.: `Optimal resource allocation for OFDMA downlink systems', Proc. IEEE Int. Symp. on Information Theory, July 2006, p. 1394–1398.
    6. 6)
      • Muller, C., Klein, A., Wegner, F., Kuipers, M., Raaf, B.: `Dynamic subcarrier, bit and power allocation in OFDMA-based relay networks', Proc. 12th Int. OFDM Workshop, 2007.
    7. 7)
    8. 8)
      • Kwon, T., Song, H., Lee, J., Kim, Y.: `A power division reuse partitioning scheme with half frequency reuse factor for OFDMA downlink systems', Proc. IEEE Int. Conf. on Communications (ICC 2008), May 2008, p. 3237–3241.
    9. 9)
      • Choi, Y.J., Kim, C.S., Bahk, S.: `Flexible design of frequency reuse factor in OFDMA cellular networks', Proc. IEEE Int. Conf. on Communications (ICC 2006), June 2006, 4, p. 1784–1788.
    10. 10)
      • Hua, Y., Zhang, Q., Niu, Z.: `Resource allocation in multi-cell OFDMA-based relay networks', Proc. IEEE INFOCOM (INFOCOM 2010), March 2010, p. 1–9.
    11. 11)
      • Seyyed Alikhani, E., Mahboobi, B., Ardebilipour, M., Seyyed Alikhani, A.: `Resource allocation and frequency reusing for multihop relay systems', Proc. IEEE, 19th Iranian Conf. on Electrical Engineering (ICEE 2011), July 2011, p. 1–6.
    12. 12)
      • Seyyed Alikhani, E., Mahboobi, B., Ardebilipour, M., Seyyed Alikhani, S.A.: `Adaptive radio resource allocation with frequency reusing for OFDMA cellular relay networks', Proc. IEEE, Third Int. Conf. on Ubiquitous and Future Networks (ICUFN 2011), July 2011, p. 395–400.

Related content

This is a required field
Please enter a valid email address