Title :
Study on the Adaptive Method for the Carrier Frequency Shift in the Multi-carriers System
Author :
Qingfeng, Jing ; Weizhi, Zhong ; Fanqiang, Kong
Author_Institution :
Coll. of Astronaut., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
A new compensation method for the frequency shift in the multi-carrier system is studied. The phase offset unbiased estimation and the LMS filter is used to implement the compensation method. Moreover, the compensation method is designed on the FPGA platform and the compensation ability is obtained through the hardware simulation. The simulation results indicate that the UE-LMS compensation method can effectively compensate the Doppler frequency shift in the OFDM system.
Keywords :
Doppler shift; OFDM modulation; compensation; field programmable gate arrays; filtering theory; least mean squares methods; phase estimation; Doppler frequency shift; FPGA platform; LMS filter; OFDM system; UE-LMS compensation method; adaptive method; carrier frequency shift; frequency shift compensation method; multicarrier system; phase offset unbiased estimation; Discrete Fourier transforms; Doppler effect; Estimation; Field programmable gate arrays; Least squares approximation; OFDM; Phase noise; FPGA; OFDM; adaptive algorithm; frequency shift;
Conference_Titel :
Measuring Technology and Mechatronics Automation (ICMTMA), 2011 Third International Conference on
Conference_Location :
Shangshai
Print_ISBN :
978-1-4244-9010-3
DOI :
10.1109/ICMTMA.2011.701
