Title :
Pilot Aided LS Channel Estimation in MIMO-OFDM Systems
Author :
Yin, Changchuan ; Li, Jingyu ; Hou, Xiaolin ; Yue, Guangxin
Author_Institution :
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun.
Abstract :
This paper presents the theoretical and simulation results for least square channel estimation in MlMO-OFDM systems based on two types of pilot structure, the block-type pilot and the comb-type pilot. We derive their estimation equations, average mean square error lower bounds and optimum pilot design rules. Simulation results verify the theoretical analysis and show that the comb-type pilot aided channel estimation has a better performance when the channel is time-variant
Keywords :
MIMO communication; OFDM modulation; channel estimation; least squares approximations; time-varying channels; MIMO-OFDM systems; average mean square error; block-type pilot; comb-type pilot; least square channel estimation; pilot aided LS channel estimation; time-variant channel; AWGN; Additive white noise; Analytical models; Channel estimation; Least squares approximation; Mean square error methods; OFDM; Receiving antennas; Time domain analysis; Transmitting antennas;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.345832
