Avoidance of co-channel interference using switched parasitic array antenna in femtocell networks

  • Authors:

  • Yeonjune Jeong;Hyunduk Kim;Byung-Sung Kim;Hyunseung Choo

  • Affiliations:

  • School of Information and Communication Engineering, Sungkyunkwan University, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Korea

  • Venue:
  • ICCSA'10 Proceedings of the 2010 international conference on Computational Science and Its Applications - Volume Part III
  • Year:
  • 2010

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Abstract

Femtocells are low-cost and low-power cellular home base stations that connect mobile users to a operator’s network by means of a broadband backhaul. Through this approach, the network operators can extend indoor coverage at a low-cost and reduce the operating cost. However, there exists a co-channel interference between macrocell and femtocells when they use the same frequency band. This co-channel interference causes severe performance degradation of femtocells and macrocell. Therefore, we propose a novel scheme to reduce the co-channel interference to macrocell without performance degradation of femtocells. The proposed scheme avoids the co-channel interference to macrocell users effectively using the SPA antenna which offers 8-directions to control the antenna beam pattern and transmitting power. Performance evaluation results have confirmed that the proposed scheme reduces the co-channel interference by 80% compared to the case using omni-directional antenna.