Title :
BER performance of phase compensation according to the FFT start point offset in OFDM system
Author :
Yong Su Lee ; Sang Ho Lee ; Yeong Jin Kim ; Yong Seouk Choi ; Dong Seung Kwon ; Whan Woo Kim
Author_Institution :
Future Internet Res. Dept., Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Abstract :
Generally in OFDM system, we intentionally set the FFT start point offset for the purpose of preventing from ICI in the perspective of implementation, but it will bring phase rotation that can not be compensated by simple LS channel estimation. Therefore, in this paper, we showed that uncoded BER performances were enhanced by the phase compensation method when we used the FFT start point offset in the presence of received time synchronization errors.
Keywords :
OFDM modulation; WiMax; channel estimation; error statistics; fast Fourier transforms; mobile radio; quadrature amplitude modulation; synchronisation; 64-QAM; FFT start point offset; ICI; LS channel estimation; OFDM system; artificial timing errors; mobile-WiMAX specification; phase compensation; phase compensation method; received time synchronization errors; uncoded BER performances; Mobile-WiMAX; OFDM; Phase Compensation; Symbol Synchronization Errors;
Conference_Titel :
ICT Convergence (ICTC), 2013 International Conference on
Conference_Location :
Jeju
DOI :
10.1109/ICTC.2013.6675513
