ZHAO Lin-jing, LI Jian-dong, ZHANG Gang-shan. A Novel Algorithm of Frequency Offsets Estimation for Multiuser OFDM Systems[J]. Acta Electronica Sinica, 2007, 35(6A): 161-164.
ZHAO Lin-jing, LI Jian-dong, ZHANG Gang-shan. A Novel Algorithm of Frequency Offsets Estimation for Multiuser OFDM Systems[J]. Acta Electronica Sinica, 2007, 35(6A): 161-164.DOI:
Canier Frequency offsets in multiuser Orthogonal Frequency-Division Multiplexing(OFDM)system will introduce Inter-Carrier Interference(ICI) and Multiple-Access Interference(MAI)
and consequently degrade the system performance.The problem of frequency offsets estimation in the uplink of multiuser OFDM is addressed.A novel iterative parameter estimation method with interference cancellation of multiuser detection is proposed.The new estimator decreases the complexity of the multi-dimensional search with ML method
and efficiently solves the problem of multi-frequency offsets estimation.