Spectral-efficiency and Demand-based Joint Relay and Bandwidth Assignment for Cooperative Relay Network

Authors

  • Aimi Syamimi Ab Ghafar Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
  • Norsheila Fisal Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
  • Anthony Lo Wireless and Mobile Communication (WMC) Group, Faculty of Electrical Engineering, Mathematics and Computer Science, Delft University of Technology, P.O. Box 5031, 2600 GA Delft, The Netherlands
  • Siti Marwangi Mohamad Maharum Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
  • Faiz Asraf Saparudin Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
  • Norshidah Katiran Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia

DOI:

https://doi.org/10.11113/jt.v64.2082

Keywords:

Cooperative communication, relay assignment, bandwidth assignment, achievable rate, fairness

Abstract

Cooperative communication system by exploiting multiple relay nodes (RN) offers significant performance improvement in terms of coverage and capacity. However, using all available RNs in the network is not optimal. Some RNs are located far from user equipment (UE), or having bad link quality due to fading and shadowing. Therefore, only several RNs with good link quality to the UE need to be chosen. Furthermore, in a high user density network, bandwidth is limited which requires proper resource allocation. In addition, each UE has different traffic demand to be satisfied. There are scenarios where eNodeB (eNB) and RN are wasting their resources to UE with low demand, whereas the resources can be used for different UE to compensate for its high demand. In this project, joint problem of relay and bandwidth assignment in a network with heterogeneous user traffic are studied. Accordingly, a Spectral-efficiency and Demand-based Joint Relay and Bandwidth Assignment (SE-D-JRBA) scheme is proposed which is flexible for network with diverse user traffic demands. Numerical evaluation is analyzed for SE-D-JRBA with full-duplex (FDX) and half-duplex (HDX) RN and decode-and-forward (DCF) operation, hence compared to system without relay cooperation. The results demonstrated that the proposed method obtained good system efficiency and fairness.

References

ITU-R Rep. M.2134. 2008. Requirements Related to technical Performance for IMT-Advanced Radio Interface(s).

3GPP TR 36.913. 2009. Requirements for Further Advancements for Evolved Universal Terrestrial Radio Access (E-UTRA).

Saparudin F. A., Fisal N., A. Rashid R., Ab Ghafar A. S. and Mohamad Maharum S. M. 2011. Cooperative Communication and Cognitive Radio (CR) Technology in LTE- Advanced. The International Conference on Informatics Engineering & Information Science (ICIEIS 2011), Kuala Lumpur, Malaysia. Part III: 701–710.

Katiran N., Fisal N., Syed Yusof S. K., Mohamad Maharum S. M., Ab Ghafar A. S. and Saparudin F. A. 2011. Inter-cell Interference Mitigation and Coordination in CoMP Systems. The International Conference on Informatics Engineering & Information Science (ICIEIS 2011), Kuala Lumpur, Malaysia. Part III: 654–665.

Mohamad Maharum S. M., Fisal N., A. Rashid R., Ab Ghafar A. S., Saparudin F. A. and Katiran N. 2011. Challenges and Practical Implementation of Self-Organizing Networks in LTE/LTE-Advanced Systems. 2011 5th International conference on Information Technology and Multimedia (ICIMu2011), Selangor, Malaysia. 1–5.

Ab Ghafar A. S., Satiman N., Fisal N., Mohamad Maharum S. M., Saparudin F. A., A. Rashid R., Syed Yusof S. K. and Katiran N. 2011. Communications in Computer and Information Science: Techniques on Relaying for LTE-Advanced Network. The International Conference on Informatics Engineering & Information Science (ICIEIS 2011), Kuala Lumpur, Malaysia. Part III: 624–638.

Ghosh A. M., Ratasuk R., Mondal B., Mangalvedhe N. and Thomas T. 2010. LTE-Advanced: Next-Generation Wireless Broadband Technology. Invited Paper in: IEEE Wireless Communications. 17(3): 10–22.

Yang Y., Hu H., Xu J. and Mao G. 2009. Relay Technologies for WiMAX and LTE-Advanced Mobile Systems. IEEE Communications Magazine. 47(10): 100–105.

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Published

2013-09-15

How to Cite

Ab Ghafar, A. S., Fisal, N., Lo, A., Mohamad Maharum, S. M., Saparudin, F. A., & Katiran, N. (2013). Spectral-efficiency and Demand-based Joint Relay and Bandwidth Assignment for Cooperative Relay Network. Jurnal Teknologi, 64(3). https://doi.org/10.11113/jt.v64.2082

Issue

Section

Science and Engineering