Yan Chun-lin, Li Shao-qian, Tang You-xi, Luo Xiao, Fang Jia-yi. New Frequency Offset Estimation Methods for OFDM Systems by Using CAZAC Sequence[J]. Journal of Electronics & Information Technology, 2006, 28(1): 139-142.
Citation:
Yan Chun-lin, Li Shao-qian, Tang You-xi, Luo Xiao, Fang Jia-yi. New Frequency Offset Estimation Methods for OFDM Systems by Using CAZAC Sequence[J]. Journal of Electronics & Information Technology, 2006, 28(1): 139-142.
Yan Chun-lin, Li Shao-qian, Tang You-xi, Luo Xiao, Fang Jia-yi. New Frequency Offset Estimation Methods for OFDM Systems by Using CAZAC Sequence[J]. Journal of Electronics & Information Technology, 2006, 28(1): 139-142.
Citation:
Yan Chun-lin, Li Shao-qian, Tang You-xi, Luo Xiao, Fang Jia-yi. New Frequency Offset Estimation Methods for OFDM Systems by Using CAZAC Sequence[J]. Journal of Electronics & Information Technology, 2006, 28(1): 139-142.
In this paper a new method for frequency offset estimation is proposed where the training sequence is composed of two Constant Amplitude Zero Auto Correlation (CAZAC) sequences in one OFDM symbol and the frequency offset up to OFDM bandwidth can be detected. The training sequence also can be used for channel estimation and equalization. This will enhance the efficiency of data transmission. Cramer-Rao bound can be reached in the estimation. The valid of the algorithm is verified in AWGN channel and Rayleigh channel.
ETS 300 401 Second Edition, Radio broadcasting systems; Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers [S]. 1997.[3]Reimers U. DVB-T: the COFDM-based system for terrestrial television [J].Electronics Communication Engineerig Journal.1997, 9(1):2832-[8]严春林, 李少谦, 唐友喜, 房家奕, 罗霄. 利用重复序列和循环前缀的OFDM频率同步新方法. 电波科学学报,2005, 20(6):[13]Tureli U, Liu H, Zoltowski M D. OFDM blind carrier estimation: ESPRIT [J].IEEE Trans. on Communications.2000, 48(9):1459-[14]Morelli M, Mengali U. An improved frequency offset estimator for OFDM applications[J].IEEE Communications Letters.1999, 3(3):75-[16]Bomer L, Antweiler M. Perfect N-phase sequences and arrays[J].IEEE J. on Select. Areas Commun.1992, 10(4):782-[18]Tellambura, C, Parker M G, Guo Y J, Shepherd S J, Barton S K. Optimal sequences for channel estimation using discrete Fourier transform techniques[J].IEEE Trans. on Communications.1999, 47(2):230-[21]Kim Yun Hee, Song Iickho, Yoon Seokho, Park So Ryoung. An efficient frequency offset estimator for OFDM systems and its performance characteristics[J].IEEE Trans. on Vehicular Technology.2001, 50(5):1307-