TRANSMITTER USING SYMBOL CONSTELLATION ROTATION AND SPECTRUM SHAPING, TRANSMISSION METHOD THEREOF, RECEIVER AND RECEPTION METHOD THEREOF IN COMMUNICATION SYSTEM

Provided are a discrete Fourier transform (DFT)-spread orthogonal frequency division multiplexing (OFDM) transmitter and transmission method, and a DFT-spread OFDM receiver and reception method which may receive signals transmitted thereby, in which a constellation rotation angle and a frequency dom...

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Hauptverfasser: CHO, Joonho, CHOI, Jeonghoon
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CHOI, Jeonghoon
description Provided are a discrete Fourier transform (DFT)-spread orthogonal frequency division multiplexing (OFDM) transmitter and transmission method, and a DFT-spread OFDM receiver and reception method which may receive signals transmitted thereby, in which a constellation rotation angle and a frequency domain spectrum shaping vector are designed such that a PAPR may be easily traded off with frequency efficiency even without inter-symbol interference. The DFT-spread OFDM transmitter includes a constellation rotation unit constellation-rotating a symbol vector including M pulse amplitude modulation (PAM) symbols by a constellation rotation angle to generate a constellation-rotated symbol vector, a pruned DFT-spread unit spreading the constellation-rotated symbol vector by using a pruned DFT matrix to generate a pruned DFT-spread vector, a frequency domain spectrum shaping unit performing a Hadamard product on the pruned DFT-spread vector with a shaping vector to generate a frequency domain spectrum shaped vector, and a subcarrier allocation unit allocating the frequency domain spectrum shaped vector to a subcarrier in an allocated frequency range.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title TRANSMITTER USING SYMBOL CONSTELLATION ROTATION AND SPECTRUM SHAPING, TRANSMISSION METHOD THEREOF, RECEIVER AND RECEPTION METHOD THEREOF IN COMMUNICATION SYSTEM
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