Patent ID: 8270514
Filing Date: 2012-09-18
Classification: H04B,H04J,H04L

Abstract:
1. A transmitting device comprising: a phase rotation unit that applies, in a frequency domain and to a sequence which has a code length N and has a constant amplitude for estimating a channel response, a phase rotation of a rotation amount that is set for the transmitting device and that rotates by an integral multiple of 2π at N subcarriers, wherein the phase difference between adjacent subcarriers is constant; and a preamble generating unit that assigns the sequence for estimating a channel response, to which the phase rotation is applied, to the subcarriers and transmits the sequence, wherein the transmitting device receives information from a receiving device, the transmitting device determines the amount of the phase rotation based on the information received from the receiving device, and a minimum unit of amount of time shift corresponding to the amount of the phase rotation is a value greater than a maximum delay time.