TY - GEN
T1 - Time-varying channel estimation in OFDM systems with null subcarriers
AU - Kim, Jihyung
AU - Nam, Sangho
AU - Kwon, Dong Seung
AU - Hong, Daesik
PY - 2008
Y1 - 2008
N2 - In this paper, we propose a robust channel estimation method in OFDM systems over fast fading channels. In consideration of the effect of null subcarriers, the proposed channel estimation is first performed in the frequency domain. By making efficient use of channel correlation and the property of ICI to reduce the number of needed parameters for channel estimation, robust channel estimation for ICI is accomplished in parallel, pilot cluster by pilot cluster. It is then transformed into the time domain to obtain a gain in noise reduction and to reduce interpolation error as well. Simulation results show that the proposed channel estimation has good performance compared to previous works.
AB - In this paper, we propose a robust channel estimation method in OFDM systems over fast fading channels. In consideration of the effect of null subcarriers, the proposed channel estimation is first performed in the frequency domain. By making efficient use of channel correlation and the property of ICI to reduce the number of needed parameters for channel estimation, robust channel estimation for ICI is accomplished in parallel, pilot cluster by pilot cluster. It is then transformed into the time domain to obtain a gain in noise reduction and to reduce interpolation error as well. Simulation results show that the proposed channel estimation has good performance compared to previous works.
UR - http://www.scopus.com/inward/record.url?scp=47749153025&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=47749153025&partnerID=8YFLogxK
U2 - 10.1109/VETECS.2008.296
DO - 10.1109/VETECS.2008.296
M3 - Conference contribution
AN - SCOPUS:47749153025
SN - 9781424416455
T3 - IEEE Vehicular Technology Conference
SP - 1409
EP - 1412
BT - 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
T2 - 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
Y2 - 11 May 2008 through 14 May 2008
ER -