A new practical power and bit allocation algorithm in DMT systems

被引：0
|
作者：
Hu, J [1 ]
Liu, W [1 ]
机构：
[1] Xian Jiaotong Univ, Xian 710049, Peoples R China
来源：
APOC 2001: ASIA-PACIFIC OPTICAL AND WIRELESS COMMUNICATIONS, METRO AND ACCESS NETWORKS | 2001年 / 4583卷
关键词：
ADSL; DMT; power allocation;
D O I：
10.1117/12.445138
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
One of the advantages for Discrete Multitone(DMT) modulation systems compared to single carrier systems is that the power and bits may be allocated to each subchannel in some way for optimal performance. Some algorithms proposed before have high complexity and use flat power distribution which is not the optimal distribution. Based on the detail analysis of Water-Pouring theorem, a new practical algorithm is presented which match approximately matches the Water-Pouring distribution and can also the discrete bit loading problem. The simulation results show this algorithm has better performance and lower complexity.
引用
收藏
页码：289 / 294
页数：6
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