Computationally efficient optimal-power allocation algorithms for multicarrier communication systems

被引：260
|
作者：
Krongold, BS
Ramchandran, K
Jones, DL
机构：
[1] Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA
[2] Univ Illinois, Coordinated Sci Lab, Urbana, IL 61801 USA
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2000年 / 48卷 / 01期
关键词：
discrete multitone modulation; loading algorithm; multicarrier communication systems; power allocation;
D O I：
10.1109/26.818869
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：
In this paper, we present an optimal, computationally efficient, integer-bit power allocation algorithm for discrete multitone modulation. Using efficient lookup table searches and a Lagrange-multiplier bisection search, our algorithm converges faster to the optimal solution than existing techniques and can replace the use of suboptimal methods because of its low computational complexity. Fast algorithms are developed for the data rate and performance margin maximization problems.
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页码：23 / 27
页数：5
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