Title :
Research and the hardware design of the UE-LMS compensation method for the Doppler frequency shift in the OFDM system
Author :
Jing Qingfeng ; Zhong Weizhi ; Kong Fanqiang
Author_Institution :
Coll. of Astronaut., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
The new compensation method called the UE-LMS method for the Doppler frequency shift in the OFDM system is studied. The phase offset unbiased estimation and the LMS filter is used to implement the compensation method. Moreover, the influence of the Doppler frequency shift and the compensation steps are introduced. Lastly, 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. Besides, the method can save lots of signal resource during the compensation process.
Keywords :
Doppler shift; OFDM modulation; field programmable gate arrays; filtering theory; least mean squares methods; Doppler frequency shift; FPGA platform; LMS filter; OFDM system; UE-LMS compensation method; hardware design; phase offset unbiased estimation; Doppler effect; Estimation; Field programmable gate arrays; Least squares approximation; OFDM; Phase noise; Read only memory; Doppler frequency shift; FPGA; LMS; OFDM;
Conference_Titel :
Image and Signal Processing (CISP), 2010 3rd International Congress on
Conference_Location :
Yantai
Print_ISBN :
978-1-4244-6513-2
DOI :
10.1109/CISP.2010.5647110
