A Suboptimal Scheme for Multi-User Scheduling in Gaussian Broadcast Channels
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Permanent link to this recordhttp://hdl.handle.net/10754/317597
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AbstractThis work proposes a suboptimal multi-user scheduling scheme for Gaussian broadcast channels which improves upon the classical single user selection, while considerably reducing complexity as compared to the optimal superposition coding with successful interference cancellation. The proposed scheme combines the two users with the maximum weighted instantaneous rate using superposition coding. The instantaneous rate and power allocation are derived in closed-form, while the long term rate of each user is derived in integral form for all channel distributions. Numerical results are then provided to characterize the prospected gains of the proposed scheme.
SponsorsThis work was supported by YSREP Grant 2-011-2-002 from the Qatar National Research Fund (a member of Qatar Foundation). The work of A. Zafar was supported in part by the King Abdullah University of Science and Technology (KAUST). The work of M.-S. Alouini was supported by KAUST. The statements made herein are solely the responsibility of the authors.
JournalIEEE Signal Processing Letters