TY - GEN
T1 - The effect of imperfect carrier frequency offset estimation on OFDMA uplink transmission
AU - Zhang, Zhongshan
AU - Tellambura, Chintha
PY - 2007
Y1 - 2007
N2 - Since carrier frequency offset destroys user's signal orthogonality in Orthogonal Frequency-Division Multiplexing Access (OFDMA) uplink transmission, resulting in an interference-limited system, its estimation/correction is very important. The residual carrier frequency offset of each user contributes Inter-Carrier-Interference (ICI) and Multiple-User-Interference (MUI) to other users. In this paper, the effect of the carrier frequency offset on OFDMA uplink is analyzed. We first analyze the average uplink capacity losses as well as the Signal-to-Interference-and-Noise Ratio (SINR) reduction due to the carrier frequency offsets, and then discuss the capacity increases by using adaptive power allocation. The averaged Bit Error Rate (BER) performance with the carrier frequency offsets on OFDMA uplink is also analyzed.
AB - Since carrier frequency offset destroys user's signal orthogonality in Orthogonal Frequency-Division Multiplexing Access (OFDMA) uplink transmission, resulting in an interference-limited system, its estimation/correction is very important. The residual carrier frequency offset of each user contributes Inter-Carrier-Interference (ICI) and Multiple-User-Interference (MUI) to other users. In this paper, the effect of the carrier frequency offset on OFDMA uplink is analyzed. We first analyze the average uplink capacity losses as well as the Signal-to-Interference-and-Noise Ratio (SINR) reduction due to the carrier frequency offsets, and then discuss the capacity increases by using adaptive power allocation. The averaged Bit Error Rate (BER) performance with the carrier frequency offsets on OFDMA uplink is also analyzed.
UR - http://www.scopus.com/inward/record.url?scp=38549179888&partnerID=8YFLogxK
U2 - 10.1109/ICC.2007.1040
DO - 10.1109/ICC.2007.1040
M3 - Conference contribution
AN - SCOPUS:38549179888
SN - 1424403537
SN - 9781424403530
T3 - IEEE International Conference on Communications
SP - 6281
EP - 6286
BT - 2007 IEEE International Conference on Communications, ICC'07
T2 - 2007 IEEE International Conference on Communications, ICC'07
Y2 - 24 June 2007 through 28 June 2007
ER -