PILOT ALLOCATION METHOD FOR CHANNEL QUALITY ESTIMATION IN SC-FDMA SYSTEM AND OFDMA SYSTEM, AND A TRANSMITTER AND A RECEIVER FOR CHANNEL QUALITY ESTIMATION USING THE METHOD

摘要

A pilot allocation method for channel quality estimation in SC-FDMA system and OFDMA system, and a transmitter and a receiver for channel quality estimation using the method are provided to improve whole error by preventing performance deterioration at both sides frequency. In a pilot allocation method for channel quality estimation in SC-FDMA system and OFDMA system, a plurality of pilot signals for estimating channel quality is allotted to a carrier signal by using a CAZAC sequence(Constant Amplitude Zero Auto-Correlation Sequence) of the circulation conversion form. The pilot signal is allocated to the total frequency band of the carrier signal, and the discrete Fourier transform of the carrier signal including the allocated pilot signal is performed. The total frequency band of the carrier signal which is transformed by the discrete Fourier transform is divided into a plurality of subcarrier bands.