Title :
Asymptotic Analysis of Dual-Diagonal LMMSE Channel Estimation in OFDM Systems
Author :
Geng, Nian ; Yuan, Xiaojun ; Ping, Li ; Yeung, Lam Fat
Author_Institution :
Dept. of Electr. Eng., City Univ. of Hong Kong, Hong Kong, China
Abstract :
Asymptotic analysis of the dual-diagonal (DD) linear-minimum-mean-square-error (LMMSE) channel estimation for orthogonal frequency-division multiplexing (OFDM) systems is presented. We prove that the DD-LMMSE estimator is asymptotically optimal among all DD estimators as the number of subcarriers tends to infinity. Based on the asymptotic analysis, we propose an evolution tool to predict the performance of iterative OFDM systems. Numerical results are presented to verify our analysis.
Keywords :
OFDM modulation; channel estimation; mean square error methods; DD-LMMSE estimator; asymptotic analysis; channel estimation; dual-diagonal LMMSE channel estimation; iterative OFDM systems; linear-minimum-mean-square-error; orthogonal frequency-division multiplexing; Channel estimation; Estimation; Frequency domain analysis; IEEE Communications Society; OFDM; Signal detection; Transceivers;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
978-1-4244-5636-9
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2010.5683744
