Patent ID: 7873124

Claim:
A radio receiving method comprising: receiving a signal including a data symbol, a specific symbol and a pilot symbol, utilizing a radio receiving section, the pilot symbol being mapped on one of first signal points in a signal space; the specific symbol being inserted immediately before or immediately after the pilot symbol and being mapped on one second signal point of a plurality of second signal points in the signal space the second signal point on which the specific symbol is mapped being different from the first signal points; one of in-phase and quadrature signal components of the specific symbol being zero; the data symbol being mapped on one third signal point of a plurality of third signal points in the signal space; and the third signal point being different from the first signal point on which the pilot symbol is mapped and the second signal point on which the specific symbol is mapped; outputting at least a frame timing signal indicating a timing of the pilot symbol, utilizing a frame timing signal generating section, the frame timing signal using a symbol of one symbol period as a timing of the pilot symbol in periods in which a signal amplitude of at least two consecutive symbol periods is zero in one signal component of the in-phase and quadrature signal components of the received signal; estimating one of amplitude distortion and a frequency offset of the received signal using the frame timing signal, utilizing an estimating section; and detecting the received signal using the frame timing signal and an estimation signal of one of the amplitude distortion and the frequency offset of the received signal, utilizing a detecting section.