On the study of CFO Coarse Estimation on OFDM

• Main Authors: Hung Chun Hsu, 徐弘俊
• Other Authors: Y. Y. Wang
• Format: Others
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/96796722936480093988

碩士 === 長庚大學 === 電機工程學系 === 102 === The inter-carrier-interference (ICI) problem caused by carrier frequency offset (CFO) in Orthogonal Frequency Division Multiplexing (OFDM) systems. This study proposes a frequency domain CFO coarse estimation algorithm using a conventional ICI-self-cancellation scheme precoded OFDM symbol. The proposed approach uses a set of spectral linear filters to find the CFO coarse estimate through comparisons of the filter output magnitudes. Computer simulations show that the proposed algorithm can effectively extend the CFO tolerance of the ICI-self-cancellation precoded OFDM, apart from an improvement in the performance of data decoding.