Title :
Carrier frequency offset estimation based on data-dependent superimposed training for OFDM systems
Author :
Zhang, Qinjuan ; Wu, Muqing ; Guo, Qilin ; Zhang, Tingting ; Zhang, Rui
Author_Institution :
Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, we propose a solution to the carrier frequency offset (CFO) estimation based on data dependent superimposed training scheme for Orthogonal Frequency Division Multiplexing (OFDM) systems. The proposed CFO estimation can improve the bandwidth efficiency compared with traditional pilot assistant scheme because it consumes no extra bandwidth for the training sequence is superimposed to the data sequence. The simulations demonstrate that the proposed estimator can approach the performance of the pilot assistant scheme very well in terms of MSE and BER with great bandwidth efficiency improvement. Overall, the proposed solution outperforms the traditional pilot assistant scheme.
Keywords :
OFDM modulation; error statistics; frequency estimation; mean square error methods; BER; CFO estimation; MSE; OFDM systems; bandwidth efficiency; bit error rate; carrier frequency offset estimation; data sequence; data-dependent superimposed training scheme; orthogonal frequency division multiplexing system; pilot assistant scheme; training sequence; Bandwidth; Channel estimation; Estimation; Interference; OFDM; Receivers; Training; Orthogonal Frequency Division Multiplexing (OFDM); carrier frequency offset (CFO); superimposed training;
Conference_Titel :
Telecommunications (ICT), 2012 19th International Conference on
Conference_Location :
Jounieh
Print_ISBN :
978-1-4673-0745-1
Electronic_ISBN :
978-1-4673-0746-8
DOI :
10.1109/ICTEL.2012.6221300
