Patent ID: 9054761
Filing Date: 2015-06-09
Classification: H04B,H04L

Abstract:
1. A method for transmitting a signal by using a radio resource in a multiple antenna system, the method comprising: transmitting a first reference signal for a first antenna using a first sequence; and transmitting a second reference signal for a second antenna using a second sequence, wherein the radio resource comprises first type resource elements (REs) and second type REs, each of the first type REs transmitting the first and second reference signals and the second type REs not transmitting the first and the second reference signals, wherein the first sequence comprises a first portion and a second portion, the first portion is multiplied by a first phase shift value, the second portion is multiplied by a second phase shift value, and a phase offset exists between the first and second phase shift values, and wherein the first portion of the first reference signal and the second portion of the first reference signal are transmitted through a same time duration, and REs transmitting the first reference signal are same as REs transmitting the second reference signal.