Title :
Pilot Design for Frequency Offset Tracking in MIMO OFDM Systems
Author :
Aoki, Tsuguhide ; Sandell, Magnus
Author_Institution :
Corp. Res. & Dev. Center, Toshiba Corp., Kawasaki
Abstract :
This paper analyses the estimation of residual frequency offset in MIMO OFDM systems using pilot subcarriers. A closed-form expression for the MSE is derived and this is used to study the pilot design problem. An orthogonal design is proposed and simulation results show that this is superior to using the same pilots on all pilot subcarriers
Keywords :
MIMO systems; OFDM modulation; mean square error methods; MIMO OFDM systems; closed-form expression; mean-squared error; orthogonal design; pilot design problem; pilot subcarriers; residual frequency offset tracking; Fading; Frequency estimation; Frequency synchronization; MIMO; Maximum likelihood estimation; OFDM; Oscillators; Radio frequency; Robustness; Tuning;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
1-4244-0329-4
Electronic_ISBN :
1-4244-0330-8
DOI :
10.1109/PIMRC.2006.254383
