Upload
ntuiiilte
View
239
Download
1
Tags:
Embed Size (px)
Citation preview
Channel-aware scheduling algorithms for SC-FDMA in LTE uplink
Yu-Shan Liang2010/03/19
[1] Ruiz de Temino, L. ; Berardinelli, G. ; Frattasi, S. ; Mogensen, P. ; “Channel-Aware Scheduling Algorithms for SC-FDMA in LTE Uplink,” IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008 (PIMRC 2008), pp. 1 – 6, Dec. 2008.
Problem Definition
• Single carrier frequency division multiple access as the uplink access scheme– Proportional fair scheduling metric (PF)
• Fairness & overall cell throughput
– Allocating the resource blocks (RBs)• contiguity paradigm
Input of the scheduler is the PF matrix M
Matrix M
Heuristic Algorithms• FME: First Maximum Expansion• RME: Recursive Maximum Expansion• MADE: Minimum Area-Difference to the Envelope
FME
RME
MADE
Simulations & Conclusions
• Contiguous allocation of the RBs for each user
• Considering only frequency-domain channel-aware packet scheduling
Simulation parameters and models Bandwidth configuration parameters
100 RBs
Data-rate fairness for 10 users