Power allocation for maximizing the MAC capacity via majorization

被引：0
|
作者：
Dai, Jisheng [1 ,2 ,3 ]
Chang, Chunqi [4 ]
机构：
[1] Jiangsu Univ, Sch Elect & Informat Engn, Zhenjiang 212013, Peoples R China
[2] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China
[3] Nettech Technol Suzhou Co Ltd, Suzhou 215131, Peoples R China
[4] Soochow Univ, Sch Elect & Informat Engn, Suzhou 215006, Peoples R China
来源：
EURASIP JOURNAL ON ADVANCES IN SIGNAL PROCESSING | 2014年
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Multiple access channel (MAC); Power allocation; Capacity; Quality-of-service (QoS); REVERSE-LINK; SUM CAPACITY; CDMA SYSTEMS; CONSTRAINTS; OPTIMIZATION;
D O I：
10.1186/1687-6180-2014-113
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：
Optimal power allocation for maximizing the sum capacity of multiple access channel (MAC) with quality-of-service (QoS) constraints is investigated in this paper. Majorization theory is the underlying mathematical theory on which our method hinges. It is shown that the optimal structure of the solution can be easily obtained via majorization theory. Furthermore, based on our new approach, an efficient searching method for power allocation is developed by restricting the attention to a new searching variable. Our new method requires less than half of the computational cost of the existing method in the worst case and is even much faster in general. Simulation results demonstrate the effectiveness of our method.
引用
收藏
页数：9
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