On Multiple Users Scheduling Using Superposition Coding over Rayleigh Fading Channels
Type
ArticleKAUST Department
Communication Theory LabComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Date
2013-02-19Online Publication Date
2013-02-19Print Publication Date
2013-04Permanent link to this record
http://hdl.handle.net/10754/269853
Metadata
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In this letter, numerical results are provided to analyze the gains of multiple users scheduling via superposition coding with successive interference cancellation in comparison with the conventional single user scheduling in Rayleigh blockfading broadcast channels. The information-theoretic optimal power, rate and decoding order allocation for the superposition coding scheme are considered and the corresponding histogram for the optimal number of scheduled users is evaluated. Results show that at optimality there is a high probability that only two or three users are scheduled per channel transmission block. Numerical results for the gains of multiple users scheduling in terms of the long term throughput under hard and proportional fairness as well as for fixed merit weights for the users are also provided. These results show that the performance gain of multiple users scheduling over single user scheduling increases when the total number of users in the network increases, and it can exceed 10% for high number of usersCitation
Zafar, A., Shaqfeh, M., Alouini, M.-S., & Alnuweiri, H. (2013). On Multiple Users Scheduling Using Superposition Coding over Rayleigh Fading Channels. IEEE Communications Letters, 17(4), 733–736. doi:10.1109/lcomm.2013.021213.122465Journal
IEEE Communications Lettersae974a485f413a2113503eed53cd6c53
10.1109/LCOMM.2013.021213.122465