TY - GEN
T1 - Analysis of a virtual carrier based carrier frequency offset estimation algorithm in the presence of I/Q imbalance in OFDM systems
AU - Chang, Jiang
AU - Lu, I. Tai
PY - 2008
Y1 - 2008
N2 - In this paper, we analyzed the feasibility of using a virtual carrier based carrier frequency offset estimation algorithm in the presence of I/Q imbalance in OFDM systems. Based on the analysis of the signal model with both receiver CFO and I/Q imbalance impairment we conclude that it is feasible to extending the virtual carrier based CFO estimation algorithm to the I/Q imbalance scenario. The CFO estimation performance is evaluated through computer simulation. Impact of parameters on the estimation performance is investigated and it is consistent with our analysis. After CFO correction, a blind based I/Q imbalance estimation and compensation algorithm is applied. The final detection performance demonstrates that the virtual carrier based CFO estimation performance is good enough for subsequent I/Q imbalance estimation and compensation.
AB - In this paper, we analyzed the feasibility of using a virtual carrier based carrier frequency offset estimation algorithm in the presence of I/Q imbalance in OFDM systems. Based on the analysis of the signal model with both receiver CFO and I/Q imbalance impairment we conclude that it is feasible to extending the virtual carrier based CFO estimation algorithm to the I/Q imbalance scenario. The CFO estimation performance is evaluated through computer simulation. Impact of parameters on the estimation performance is investigated and it is consistent with our analysis. After CFO correction, a blind based I/Q imbalance estimation and compensation algorithm is applied. The final detection performance demonstrates that the virtual carrier based CFO estimation performance is good enough for subsequent I/Q imbalance estimation and compensation.
KW - Carrier frequency offset (CFO)
KW - In-phase and quadrature-phase (I/Q) imbalance
KW - Orthogonal frequency division multiplexing (OFDM)
KW - Virtual carrier
UR - http://www.scopus.com/inward/record.url?scp=49049116590&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=49049116590&partnerID=8YFLogxK
U2 - 10.1109/SARNOF.2008.4520124
DO - 10.1109/SARNOF.2008.4520124
M3 - Conference contribution
AN - SCOPUS:49049116590
SN - 1424418437
SN - 9781424418435
T3 - Proceedings of the 2008 IEEE Sarnoff Symposium, SARNOFF
BT - Proceedings of the 2008 IEEE Sarnoff Symposium, SARNOFF
T2 - 2008 IEEE Sarnoff Symposium, SARNOFF
Y2 - 28 April 2008 through 30 April 2008
ER -