MMSE-DFE equalizer design for OFDM systems with insufficient cyclic prefix

被引：0
|
作者：
Parsaee, GR [1 ]
Yarali, A [1 ]
Ebrahimzad, H [1 ]
机构：
[1] Iran Telecommun Res Ctr, Mobile Telecommun Grp, Tehran, Iran
来源：
VTC2004-FALL: 2004 IEEE 60TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-7: WIRELESS TECHNOLOGIES FOR GLOBAL SECURITY | 2004年
关键词：
OFDM; cyclic prefix; DFE; MMSE; ZF; error distribution; FEC;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In Orthogonal Frequency Division Multiplexing (OFDM) systems, the transmitter inserts a cyclic prefix (CP) at the head of each symbol, in order to avoid inter-symbol interference (ISI) and inter-channel interference (ICI). However, since the CP does not carry useful data, this approach causes a loss in the OFDM system efficiency. To solve this problem, one can use a CP of insufficient length and decrease ISI- and ICI power by a decision feedback equalizer (DFE), presented in [7]. In this paper, we will introduce new techniques to improve the performance of this equalizer. Feedback error elimination by forward error correction and designing the equalizer with minimum mean square error (MMSE) criterion are proposed here.
引用
收藏
页码：3828 / 3832
页数：5
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