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http://dx.doi.org/10.7840/KICS.2011.36C.5.295

MF based Frequency Domain Iterative Equalization for Single-Carrier Transmission with EST Pre-coder  

Choi, Yun-Seok (삼성전자 DMC 연구소)
Lee, Yeon-Woo (목포대학교 공과대학 정보통신공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.5C, 2011 , pp. 295-301 More about this Journal
Abstract
In [1], it has been shown that the energy spreading transform (EST) based iterative equalizer (IE) could enhance its performance by improving the reliability of the decision feedback symbols without the help of the complicated channel decoder. In the matched filter (MF) based IE proposed in [1], however, its feedforward filter (FFF) has been designed in the frequency domain while its feedback filter (FBF) in the time domain. So its complexity increases proportional to the channel memory length. To solve this problem, in this paper, both FFF and FBF are designed in the frequency domain. This enables the proposed frequency domain IE (FD-IE) to achieve the lower complexity over the conventional method in the highly dispersive channel. In addition, simulation results demonstrate that the BER performance of the proposed method is the same as the conventional.
Keywords
Frequency domain iterative equalizer; Single carrier transmission; Energy spreading transform; Pre-coder;
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