naa a22 4500 510796419 CHVBK 20180411083338.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11277-011-0455-8 doi (NATIONALLICENCE)springer-10.1007/s11277-011-0455-8 Two Novel Channel Estimation for OFDM Systems by Time-Domain Cluster Discriminant Analysis Based on Parametric Channel Modeling [Elektronische Daten] [Tongliang Fan, Shizhong Yang, Haowei Wu, Dan Wang] In this paper, we describe two novel channel estimation technologies for orthogonal frequency-division multiplexing mobile communication systems using cluster discriminant analysis for sparse multipath channels. The least-squares estimator has a merit of low complexity and simple structure; however one of its drawbacks is that it does not take into consideration the effect of noise. Conventional DFT-based channel estimator improved its performance by suppressing time domain noise, but it does not completely suppress the noise. In order to overcome this disadvantage, we propose two novel channel estimation algorithms for Orthogonal frequency division multiplexing systems based on cluster analysis and discriminant analysis. The cluster analysis can be used to cluster residual noise. Discriminant analysis can distinguish the noise and channel taps in time domain. Computer simulation demonstrates the performance of the proposed algorithms in terms of bit error rate and mean square error performance. Springer Science+Business Media, LLC., 2011 Channel estimation nationallicence Channel impulse response (CIR) nationallicence Cluster analysis nationallicence Mahalanobis distance nationallicence Discriminant analysis nationallicence Fan Tongliang College of Communication Engineering, Chongqing University, 400044, Chongqing, China aut Yang Shizhong Center of Communication and Telemetering & Commanding, Chongqing University, 400044, Chongqing, China aut Wu Haowei Center of Communication and Telemetering & Commanding, Chongqing University, 400044, Chongqing, China aut Wang Dan Center of Communication and Telemetering & Commanding, Chongqing University, 400044, Chongqing, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 68/2(2013-01-01), 349-360 0929-6212 68:2<349 2013 68 11277 https://doi.org/10.1007/s11277-011-0455-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-011-0455-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fan Tongliang College of Communication Engineering, Chongqing University, 400044, Chongqing, China aut NATIONALLICENCE 700 1- Yang Shizhong Center of Communication and Telemetering & Commanding, Chongqing University, 400044, Chongqing, China aut NATIONALLICENCE 700 1- Wu Haowei Center of Communication and Telemetering & Commanding, Chongqing University, 400044, Chongqing, China aut NATIONALLICENCE 700 1- Wang Dan Center of Communication and Telemetering & Commanding, Chongqing University, 400044, Chongqing, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 68/2(2013-01-01), 349-360 0929-6212 68:2<349 2013 68 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer