TY - GEN
T1 - IQ imbalance compensation scheme in the presence of frequency offset and dynamic dc offset for a direct conversion receiver
AU - Inamori, Mamiko
AU - Bostamam, Anas M.
AU - Sanada, Yukitoshi
AU - Minami, Hideki
PY - 2009/10/12
Y1 - 2009/10/12
N2 - A direct conversion architecture reduces the cost and power consumption of a receiver. However, a direct conversion receiver may suffer from direct current (DC) offset, frequency offset, and IQ imbalance. This paper presents an IQ imbalance estimation scheme for orthogonal frequency division multiplexing (OFDM) direct conversion receivers. The proposed IQ imbalance estimation scheme operates in the presence of dynamic DC offset and frequency offset. The proposed scheme calculates IQ imbalance from a simple equation. It employs the knowledge of the preamble symbols of the IEEE 802.11 a/g standards, while it does not require the impulse response of the channel. Numerical results through computer simulation show that the bit error rate (BER) performance for the proposed IQ imbalance estimation scheme has a degradation of about 4dB with a large DC offset, frequency offset, and IQ imbalance.
AB - A direct conversion architecture reduces the cost and power consumption of a receiver. However, a direct conversion receiver may suffer from direct current (DC) offset, frequency offset, and IQ imbalance. This paper presents an IQ imbalance estimation scheme for orthogonal frequency division multiplexing (OFDM) direct conversion receivers. The proposed IQ imbalance estimation scheme operates in the presence of dynamic DC offset and frequency offset. The proposed scheme calculates IQ imbalance from a simple equation. It employs the knowledge of the preamble symbols of the IEEE 802.11 a/g standards, while it does not require the impulse response of the channel. Numerical results through computer simulation show that the bit error rate (BER) performance for the proposed IQ imbalance estimation scheme has a degradation of about 4dB with a large DC offset, frequency offset, and IQ imbalance.
UR - http://www.scopus.com/inward/record.url?scp=70349656755&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349656755&partnerID=8YFLogxK
U2 - 10.1109/VETECS.2009.5073621
DO - 10.1109/VETECS.2009.5073621
M3 - Conference contribution
AN - SCOPUS:70349656755
SN - 9781424425174
T3 - IEEE Vehicular Technology Conference
BT - VTC Spring 2009 - IEEE 69th Vehicular Technology Conference
T2 - VTC Spring 2009 - IEEE 69th Vehicular Technology Conference
Y2 - 26 April 2009 through 29 April 2009
ER -