Performance improvement of per-user threshold based multiuser switched scheduling system

Nam, Haewoon; Alouini, Mohamed-Slim

Performance improvement of per-user threshold based multiuser switched scheduling system

Type

Article

Authors

Nam, Haewoon
Alouini, Mohamed-Slim

KAUST Department

Electrical Engineering Program
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Communication Theory Lab

Date

2013

Abstract

SUMMARY This letter proposes a multiuser switched scheduling scheme with per-user threshold and post user selection and provides a generic analytical framework for determining the optimal feedback thresholds. The proposed scheme applies an individual feedback threshold for each user rather than a single common threshold for all users to achieve some capacity gain due to the flexibility of threshold selection as well as a lower scheduling outage probability. In addition, since scheduling outage may occur with a non-negligible probability, the proposed scheme employs post user selection in order to further improve the ergodic capacity, where the user with the highest potential for a higher channel quality than other users is selected. Numerical and simulation results show that the capacity gain by post user selection is significant when random sequence is used. Copyright © 2013 The Institute of Electronics, Information and Communication Engineers.

Citation

NAM, H., & ALOUINI, M.-S. (2013). Performance Improvement of Per-User Threshold Based Multiuser Switched Scheduling System. IEICE Transactions on Communications, E96.B(1), 367–370. doi:10.1587/transcom.e96.b.367

Acknowledgements

This work was supported by the research fund of Hanyang University (HY-2011-N) and by the Qatar National Research Fund.