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Performance Evaluation of Interference Bound Backhaul Links in High Capacity Wireless Networks

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Abstract

An innovative architecture employing wireless backhaul in hierarchical wireless networks is considered in this paper to provide high throughput densities. Multi-beam antennas, combined with aggressive frequency reuse have recently been exploited to increase the throughput density in densely deployed wireless networks. However, large number of narrow beams cause not only co-channel interference but also inter-cell interference. To mitigate this problem, amplitude tapering in multi-beam antennas is investigated in this paper. Results show that tapered beams significantly improve the carrier to interference ratio from 5 to 8 dB and consequently achieve downlink throughput density over 0.65 Gbps/km\(^2\). An overall throughput density of 1.2 Gbps/km\(^2\) is expected when taking both up- and downlinks into account.

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Acknowledgments

The article presents the joint work performed by the partners in the BuNGee consortium (FP7/2007-2013), funded under Grant Agreement No. 248267. The authors would also like to acknowledge the framework of PAI P7/23 BESTCOM project for supporting this work. It was also carried out in cooperation within the European COST IC1004 action. Further, the authors are grateful to Cobham Antennas for providing the measured antenna data used in the ray-tracing tool.

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Authors and Affiliations

  1. ICTEAM Electrical Engineering, Université catholique de Louvain (UCL), 1348 , Louvain-la-Neuve, Belgium

    Nizabat Khan & Claude Oestges

  2. Communications Research Group, Department of Electronics, University of York, York, UK

    Tao Jiang, David Grace & Alister G. Burr

Authors
  1. Nizabat Khan
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  2. Tao Jiang
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  3. David Grace
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  4. Alister G. Burr
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  5. Claude Oestges
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Correspondence to Nizabat Khan.

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Khan, N., Jiang, T., Grace, D. et al. Performance Evaluation of Interference Bound Backhaul Links in High Capacity Wireless Networks. Wireless Pers Commun 74, 1129–1145 (2014). https://doi.org/10.1007/s11277-013-1568-z

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  • DOI: https://doi.org/10.1007/s11277-013-1568-z

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