Patent ID: 7450652

Claim:
A receiving apparatus in an orthogonal frequency division multiplexing (OFDM) communication system, comprising: a serial-to-parallel converter for converting a received serial signal to parallel signals comprising at least two successive symbols; a pre-processor for processing an nth symbol using an (n−1)th symbol and an (n+1)th symbol; a Fourier transformer for Fourier-transforming the output of the pre-processor; an equalizer for equalizing a Fourier-transformed signal; a deinterleaver for deinterleaving the equalized signal; a decoder for decoding the deinterleaved signal; and a parallel-to-serial converter for converting the parallel decoded signal to a signal stream wherein the pre-processor recovers a cyclic prefix of the nth symbol using the (n−1)th symbol and the (n+1)th symbol, if the nth symbol is transmitted without the cyclic prefix.