Copyright © 2007 The Institute of Electronics, Information and Communication Engineers
Regular Section -- Letters -- Wireless Communication Technologies |
A Weighted Element-Wise Block Adaptive Frequency-Domain Equalization*
1 The authors are with the Dept. of Electrical and Electronic Engineering of Yonsei University, Seoul, Korea, 120-749. E-mail: blackgachi{at}yonsei.ac.kr
| Abstract |
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In this paper, a weighted element-wise block adaptive frequency-domain equalization (WEB-FDE) is proposed for a single-carrier system with the cyclic-prefix. In the WEB-FDE, the one-tap equalizer corresponding to a frequency-bin first preserves input DFT elements (element-wise block). Its coefficient in each block is then calculated by minimizing a weighted squared norm of the a posteriori error. Simulation results in a time-varying typical urban (TU) channel show that the bit-error-rate (BER) performance of the WEB-FDE outperform that of the normalized least-mean-square (NLMS)-FDE and recursive-least-square (RLS)-FDE.
Key Words: frequency-domain equalization, a posteriori error
Manuscript received September 20, 2006. Manuscript revised October 30, 2006.
* This research was supported by the MIC (Ministry of Information and Communication), Korea, under the ITRC (Information Technology Research Center) support program supervised by the IITA (Institute of Information Technology Assessment) (IITA-2006-(C1090-0603-0011)). This work was also supported by Yonsei University Institute of TMS Information Technology, a Brain Korea 21 program, Korea.