PILOT SYMBOL TRANSMITTING METHOD AND DEVICE AND PILOT SYMBOL RECEIVING METHOD AND DEVICE IN QUADRATURE FREQUENCY DIVISION MULTIPLEX BASE COMMUNICATION SYSTEM

摘要

PPROBLEM TO BE SOLVED: To provide a pilot symbol transmitting method and device and a pilot symbol receiving method and device for channel estimation in a quadrature frequency division multiplex base communication system. PSOLUTION: The present invention provides a pilot symbol transmitting method comprising the steps of performing IFFT by mapping a pilot tone frequency, and phase-rotating a second pilot, a pilot symbol transmitting method comprising the steps of performing IFFT by mapping a pilot tone frequency, saving a signal output by IFFT, and transmitting a first portion of the signal in a first pilot symbol and a second portion of the signal in a second pilot symbol, and a pilot symbol transmitting device comprising a tone mapping section for mapping a pilot tone frequency and a phase-rotating section for imparting a phase rotation to a pilot symbol. PCOPYRIGHT: (C)2007,JPO&INPIT