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- W2804647446 abstract "This paper proposes a blind estimation of the fading coefficients without using the pilot symbols in QAM-OFDM systems subjected to carrier frequency offset (CFO) where the phases of the fading coefficients are within ±π/4. First, under a frequency selective fading channel, the inter-carrier interference (ICI) due to CFO is formulated as an ICA model, the permutation and scale uncertainty inherent in ICA is resolved and CFO is estimated. Next, based on the CFO estimation results, the fading coefficients are estimated by use of the fact that symbol constellation at each sub-carrier is stretched/shrunk and rotated according to the value of its fading coefficient. Then, the unknown transmitted symbols are restored by use of the estimated coefficients. Finally, the validity of the proposed approach is confirmed from several simulations for 16QAM-OFDM." @default.
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- W2804647446 date "2009-05-05" @default.
- W2804647446 modified "2023-10-14" @default.
- W2804647446 title "A blind channel estimation under inter-carrier interference in QAM-OFDM" @default.
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- W2804647446 doi "https://doi.org/10.5687/sss.2009.204" @default.
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