Advertisement

Journal of Central South University

, Volume 18, Issue 2, pp 499–503 | Cite as

Schedule algorithm for mitigating inter-cell interference based on orthogonal complement space

  • Shao-zhong Fu (付少忠)
  • Jian-hua Ge (葛建华)Email author
Article
  • 33 Downloads

Abstract

In order to avoid severe performance degradation led by the inter-cell interference (ICI) in orthogonal frequency division multiple access (OFDMA) systems with a frequency reused factor (FRF) of 1, distributed schedule algorithm (DS-OCS) and distributed proportional fairness schedule algorithm (DPFS-OCS) based on orthogonal complement space (OCS) were proposed. The first right and left singular vectors of the channel that the user experienced were selected as the transmitting and receiving beamforming vectors. An interference space was spanned by the left singular vectors of the entire interference users in the same channel. The most suitable user lay in the OCS of the interference space was scheduled to avoid suffering interference from neighboring cells based on the criterion of system capacity maximizing and proportional fairness. The simulation results show that the average system capacity can be improved by 2%–4% compared with the DS-OCS algorithm with the Max C/I algorithm, by 6%–10% compared with the DPFS-OCS algorithm with the PF algorithm.

Key words

long term evolution interference avoidance schedule algorithm orthogonal complement space fairness 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    3GPP. Physical layer aspects for evolved UTRA: US TR 25. 814 [P]. 2006-09-22.Google Scholar
  2. [2]
    3GPP TSG-RAN WG1#42, Ericsson. Inter-cell interference handling for E-UTRA: UK R1-050764 [P]. 2005-08-26.Google Scholar
  3. [3]
    XIONG Xiong, GE Jian-hua, LI Jing, TANG Yun-shuai. Cooperative diversity based on rotation code [J]. Journal of Central South University of Technology, 2009, 16(2): 0280–0284.CrossRefGoogle Scholar
  4. [4]
    ZHANG Xian-da. Matrix analysis and applications [M]. Beijing: TsingHua University Press, 2004: 592–595. (in Chinese)Google Scholar
  5. [5]
    SANG G K, KYONGKUK C, DONGWEON Y, YOUNG J K, JAE K K. Performance analysis of downlink inter cell interference coordination in the LTE-Advanced system [C]// Fourth International Conference on Digital Telecommunications. Colmar, France: IEEE Press, 2009: 30–33.Google Scholar
  6. [6]
    QIANG Yong-quan, VIVIER G, YANG Jin, XU Ning. Inter-cell interference modeling for OFDMA systems with beamforming [C]// IEEE 68th Vehicular Technology Conference. VTC 2008-Fall. Calgary, Canada: IEEE Press, 2008: 1–5.Google Scholar
  7. [7]
    MAO Xue-hong, MAAREF A, KOON H T. Adaptive soft frequency reuse for inter-cell interference coordination in SC-FDMA based 3GPP LTE uplinks [C]// GLOBECOM 2008. New Orleans: IEEE Press, 2008: 1–6.Google Scholar
  8. [8]
    RAHMAN M, YANIKOMEROGLU H, WONG W. Interference avoidance with dynamic inter-cell coordination for downlink LTE system [C]// Wireless Communications and Networking Conference. Budapest Hungary: IEEE Press, 2009: 1–6.Google Scholar
  9. [9]
    YOSIA H, LARS T. Distributed base station cooperation via block-diagonalization and dual-decomposition [C]// IEEE GLOBECOM 2008. New Orleans: IEEE Press, 2008: 1–5.Google Scholar
  10. [10]
    LI Zhong-nian, WANG Ya-feng. A hybrid inter-cell interference mitigation scheme for OFDMA system [C]//ICCS 2008. Guangzhou: IEEE Press, 2008: 657–660.Google Scholar
  11. [11]
    R1-060291, 3GPP TSG-RAN WGA Meeting #44, Nokia OFDMA downlink inter-cell interference mitigation [R]. Denver, Colorado, 2006.Google Scholar
  12. [12]
    ZHANG Xun-yong, CHEN He, JIANG Ling-ge. Inter-cell interference coordination based on softer frequency reuse in OFDMA cellular systems [C]// ICCNNSP 2008. Zhenjiang: IEEE Press, 2008: 270–275.Google Scholar
  13. [13]
    LIU Yi, ZHANG Hai-lin. Precoding for the multiuser MIMO-OFDMA downlink with limited feedback [J]. Journal of Xidian University, 2007, 34(1): 71–75. (in Chinese)Google Scholar
  14. [14]
    REN T M, RICHARD J. Downlink beamforming algorithms with inter-cell interference in cellular networks [J]. IEEE Transactions on Wireless Communication, 2006, 5(10): 2814–2823.CrossRefGoogle Scholar
  15. [15]
    GUO Yi, LIU Gang, GE Jian-hua. Iterative channel estimation with noise reduction for MIMO-OFDM systems [J]. Journal of Xidian University, 2008, 35(2): 196–200. (in Chinese)Google Scholar

Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Shao-zhong Fu (付少忠)
    • 1
  • Jian-hua Ge (葛建华)
    • 1
    Email author
  1. 1.State Key Laboratory of Integrated Service NetworksXidian UniversityXi’anChina

Personalised recommendations