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