Orthogonal Frequency Division Multiplexing (OFDM) is sensitive to the carrier frequency offset (CFO), which destroys orthogonality and causes intercarrier interference (ICI). Recently, a simple rate 1/2 repeat coding scheme has been shown to be effective in suppressing ICI. That such a simple coding scheme is so effective raises an interesting question. Can more powerful error correcting codes with less redundancy be used just as effectively for the same purpose? In this paper, we propose the use of rate-compatible punctured convolutional (RCPC) codes.
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