loading...
 This Article 
   
 Share 
   
 Bibliographic References 
   
 Add to: 
 
Digg
Furl
Spurl
Blink
Simpy
Google
Del.icio.us
Y!MyWeb
 
 Search 
   
20th International Conference on Advanced Information Networking and Applications - Volume 2 (AINA'06)
Carrier-Frequency Offsets Estimation Based on ML and ESPRIT Method for OFDMA Uplink
Vienna, Austria
April 18-April 20
ISBN: 0-7695-2466-4
Linjing Zhao, Xidian University, Xi?an, China
Jiandong Li, Xidian University, Xi?an, China
Zhuo Lu, Xidian University, Xi?an, China
Jiyong Pang, Xidian University, Xi?an, China
Carrier Frequency Offsets (CFOs) in Orthogonal Frequency Division Multiplexing Access (OFDMA) system will introduce intercarrier interference (ICI) and consequently degrade the system performance. A new frequency offsets estimation algorithm based on the combination of ESPRIT (estimation of signal parameters by rotational invariance techniques) and the maximum likelihood (ML) estimation methods for OFDMA system is proposed. The subset of the frequency offsets is first estimated by ESPRIT, then the frequency offset of each user is identified in the subset by ML estimation method. The complexity of the combination algorithm is significantly decreased compared with the ML estimator.The algorithm efficiently solves the problem of multi-frequency offsets estimation.
Citation:
Linjing Zhao, Jiandong Li, Zhuo Lu, Jiyong Pang, "Carrier-Frequency Offsets Estimation Based on ML and ESPRIT Method for OFDMA Uplink," aina, vol. 2, pp.809-816, 20th International Conference on Advanced Information Networking and Applications - Volume 2 (AINA'06), 2006
Usage of this product signifies your acceptance of the Terms of Use.