A Suboptimal Scheme for Multi-User Scheduling in Gaussian Broadcast Channels

被引:4
|
作者
Zafar, Ammar [1 ]
Shaqfeh, Mohammad [2 ]
Alouini, Mohamed-Slim [1 ]
Alnuweiri, Hussein [2 ]
机构
[1] King Abdullah Univ Sci & Technol KAUST, Elect Engn Program, Thuwal, Makkah Province, Saudi Arabia
[2] Texas A&M Univ Qatar, Dept Elect & Comp Engn, Qatar Fdn, Doha, Qatar
关键词
Block-fading; broadcast channels; multi-user diversity; resource allocation; superposition coding; DIVERSITY;
D O I
10.1109/LSP.2014.2350776
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This 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.
引用
收藏
页码:136 / 140
页数:5
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