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AssigneeSamsung Electronics Co., Ltd.
InventorsKi-Ho Jung, Heung-Gyooun Ryu, Sung-Ryul Yun
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An OFDM (Orthogonal Frequency Division Multiplexing) communication system that multiplexes data with a plurality of orthogonal sub-carrier frequencies, which includes a transmitter for converting a serial data stream into parallel data, and segmenting the parallel data into a plurality of blocks having a plurality of data blocks; inserting reference data having information representing a phase value and a position into which the reference symbol is inserted, into each of the segmented blocks; IFFT (Inverse Fast Fourier Transform)-transforming the respective blocks into time-based signals where sub-carrier frequencies are separately assigned to the data blocks; and determining phase factors of the IFFT-transformed time-based signals to reduce a peak-to-average power ratio (PAPR) where non-linear distortion occurs due to coincidence of phases of the data blocks IFFT-transformed with the sub-carrier frequencies, and phase-rotating the IFFT-transformed signals according to the determined phase factors before transmission.
A transmission apparatus for an orthogonal frequency division multiplexing (OFDM) communication system that multiplexes data with a plurality of orthogonal sub-carriers, the apparatus comprising:
A transmission method for an orthogonal frequency division multiplexing (OFDM) communication system that multiplexes data with at least one orthogonal sub-carrier frequency, the method comprising the steps of:
A transmission method for an orthogonal frequency division multiplexing (OFDM) communication system that multiplexes data with a plurality of orthogonal sub-carriers, comprising the steps of converting a serial data stream into parallel data, segmenting the parallel data into at least one blocks having a plurality of data blocks, Inverse Fast Fourier Transform (IFFT)-transforming the blocks into time-based signals where sub-carrier frequencies are separately assigned to the data blocks, determining phase factors of the IFFT-transformed time-based signals to reduce a Peak-to-Average Power Ratio (PAPR) where non-linear distortion occurs due to coincidence of phases of the data blocks IFFT-transformed with the sub-carrier frequencies, and phase-rotating the IFFT-transformed signals according to the determined phase factors before transmission;
Dependencies are inferred from the claim text.