標題: LMMSE Channel Estimation for OFDM Systems with Low Number of Distributed Pilots
作者: Hung, Kun-Chien
Lin, David W.
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 2009
摘要: In linear minimum mean-square error (LMMSE) channel estimation for multicarrier transmission, how to estimate the needed channel correlation function remains a problem for systems with small number of pilots operating in time-varying channels. We consider approximating the channel power-delay profile by a shape characterized fully by the mean delay and the root-mean-square (RMS) delay spread. We present a novel, simple way to estimate these parameters in systems with distributed pilots. The ensuing channel estimation method is also applicable to multi-access communication. As a practical example, we also specialize the proposed technique to Mobile WiMAX signals and investigate the resulting performance.
URI: http://hdl.handle.net/11536/14788
ISBN: 978-1-4244-2514-3
ISSN: 1090-3038
期刊: 2009 IEEE 70TH VEHICULAR TECHNOLOGY CONFERENCE FALL, VOLS 1-4
起始頁: 582
結束頁: 586
Appears in Collections:Conferences Paper