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

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

Outline Introduction BABS (Bandwidth Based on SNR) ACG (Amplitude Craving Greedy) Algorithm ASA (Aggressive Sub-channel Allocation) Performance Validation Conclusion 06/03/09

Introduction

BABS (Bandwidth Based on SNR)

ACG (Amplitude Craving Greedy)

Algorithm

ASA (Aggressive Sub-channel Allocation)

Performance Validation

Conclusion

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

Round Robin

Proportional fairness

Chosen the highest Rk(t)/Tk(t) to transmission

Bandwidth Based on SNR

Amplitude Craving Greedy

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

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

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

Not consider fairness

ASA (Aggressive Sub-channel Allocation)

Simple

Sub-channel && User which is first !