OFDM Channel Estimation and Signal Detection on Nonintegral-Delay and Fast Time-Varying Channels

Authors:
Weihua Chen;Xia Lei;Shaoqian Li
Affiliations:
National Key Laboratory of Communications, University of Electronic Science and Technology of China, Chengdu, P.R. China 610054;National Key Laboratory of Communications, University of Electronic Science and Technology of China, Chengdu, P.R. China 610054;National Key Laboratory of Communications, University of Electronic Science and Technology of China, Chengdu, P.R. China 610054
Venue:
RSKT '09 Proceedings of the 4th International Conference on Rough Sets and Knowledge Technology
Year:
2009

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Abstract

A novel channel estimation and signal detection technique is presented for orthogonal frequency division multiplexing (OFDM) system on fast time-varying fading channel with nonintegral-delays. This technique, based on a linear parametric channel model, rotationally employs estimating signal parameter via rotational invariance techniques (ESPRIT) and interchannel interference (ICI) mitigation to get more accurate channel estimation and data detection. Simulation results show that the proposed method is robust to changes in channel characteristics, and the performance of which is superior to other structures without ICI mitigation or with integral-delays.