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 |