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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
112/04/13 1
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
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Outline
• Introduction – BABS (Bandwidth Based on SNR)– ACG (Amplitude Craving Greedy)
• Algorithm– ASA (Aggressive Sub-channel Allocation)
• Performance Validation• Conclusion
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Introduction
• Round Robin• Proportional fairness– Chosen the highest Rk(t)/Tk(t) to transmission
• Bandwidth Based on SNR• Amplitude Craving Greedy
Tk(t) : average throughputRk(t) : kth user’s channel achievable rate tc : control latency parameterK* : chosen user
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Algorithm
Step 1determines user to scheduled
Step 2chose maximum rate sub-channel to the user
Step 3evaluate date rate
Step 4 chose sub-channel for user
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Algorithm(cont.)
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Algorithm(cont.)
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Performance Validation
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Performance Validation(cont.)
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Performance Validation(throughput)
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Sub-band && users allocation
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Conclusion
• Not consider fairness
• ASA (Aggressive Sub-channel Allocation)• Simple
• Sub-channel && User which is first !
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