Channel equalization for DMT with insufficient cyclic prefix

被引：0
|
作者：
Zhu, J [1 ]
Ser, W [1 ]
Nehorai, A [1 ]
机构：
[1] Nanyang Technol Univ, Ctr Signal Proc, Singapore 639798, Singapore
来源：
CONFERENCE RECORD OF THE THIRTY-FOURTH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS | 2000年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In Discrete Multi-Tone (DMT) systems a cyclic prefix is added to the front of each modulated symbol-frame in order to partition the whole channel into many narrow independent sub-channels. When the length of the cyclic prefix: is shorter than the channel length, Inter-Carrier Interference (ICI) and Inter-Symbol Interference (ISI) will occur in the output signal. This paper presents a Decision Feedback Equalizer (DFE) on a symbol level to deal with this problem. The DFE first removes the ISI. It then recovers the distortion caused by ICI. The advantage of this equalizer is that the cyclic prefix for the equalizer can be discarded thus leads to no bandwidth loss. Several simulation examples are presented to show the significant improvement of the equalized signal over the unequalized.
引用
收藏
页码：951 / 955
页数：5
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