Title :
Iterative Dual Diagonal LMMSE Channel Estimation in OFDM Systems
Author :
Geng, Nian ; Ping, Li ; Yuan, Xiaojun ; Yeung, Lam Fat
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong, China
Abstract :
We propose a dual diagonal linear-minimum-mean-square-error (DD-LMMSE) channel estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems involving joint channel estimation and signal detection. Computational complexity and mean-square-error (MSE) analysis are presented to evaluate the efficiency of the proposed algorithm. Compared with the optimal LMMSE method, the proposed DD-LMMSE method can achieve significant complexity reduction without compromising much performance.
Keywords :
OFDM modulation; channel estimation; iterative methods; least mean squares methods; signal detection; OFDM system; channel estimation; computational complexity; iterative dual diagonal LMMSE; linear-minimum-mean-square-error; mean-square-error analysis; orthogonal frequency division multiplexing; signal detection; Channel estimation; Complexity theory; Covariance matrix; Estimation; Frequency domain analysis; OFDM; Receivers;
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd
Conference_Location :
Ottawa, ON
Print_ISBN :
978-1-4244-3573-9
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2010.5594162
