Aggressive Subchannel Allocation Algorithm For Efficient Dynamic Channel Allocation In Multi User Ofdma System
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Aggressive Subchannel Allocation Algorithm For Efficient Dynamic Channel Allocation In Multi User Ofdma System

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Aggressive Subchannel Allocation Algorithm For Efficient Dynamic Channel Allocation In Multi User Ofdma System Aggressive Subchannel Allocation Algorithm For Efficient Dynamic Channel Allocation In Multi User Ofdma System Presentation Transcript

  • Aggressive sub-channel allocation algorithm for efficient dynamic channel allocation in muti-user OFDMA system 報告人 : J.SHOW 指導教授 : H.H.Liu 06/03/09
  • References
    • SangJun Ko, Joo Heo and KyungHi Chang, "Aggressive sub-channel allocation algorithm for efficient dynamic channel allocation in muti-user OFDMA system,"
    • 17ht Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications(PIMRC'06),
    • Sept. 2006, page(s):1-5
    06/03/09
  • Outline
    • Introduction
      • BABS (Bandwidth Based on SNR)
      • ACG (Amplitude Craving Greedy)
    • Algorithm
      • ASA (Aggressive Sub-channel Allocation)
    • Performance Validation
    • Conclusion
    06/03/09
  • Introduction
    • Round Robin
    • Proportional fairness
      • Chosen the highest Rk(t)/Tk(t) to transmission
    • Bandwidth Based on SNR
    • Amplitude Craving Greedy
    Tk(t) : average throughput Rk(t) : kth user’s channel achievable rate tc : control latency parameter K* : chosen user 06/03/09
  • Algorithm
    • Step 1
    • determines user to scheduled
    • Step 2
    • chose maximum rate sub-channel to the user
    • Step 3
    • evaluate date rate
    • Step 4
    • chose sub-channel for user
    06/03/09
  • Algorithm(cont.) 06/03/09
  • Algorithm(cont.) 06/03/09
  • Performance Validation 06/03/09
  • Performance Validation(cont.) 06/03/09
  • Performance Validation(throughput) 06/03/09
  • Sub-band && users allocation 06/03/09
  • Conclusion
    • Not consider fairness
      • ASA (Aggressive Sub-channel Allocation)
        • Simple
      • Sub-channel && User which is first !
    06/03/09