Patent ID: 7995664
Filing Date: 2011-08-09
Classification: H04B,H04J,H04L

Abstract:
1. A method of transmitting a reference signal in an Orthogonal Frequency Division Multiplexing (OFDM) communication system using a plurality of antennas, the method comprising: generating a basic code sequence; generating a plurality of reference signal sequences for the plurality of antennas by multiplying the basic code sequence by an orthogonal code, wherein the plurality of reference signal sequences include a first reference signal sequence for a first antenna and a second reference signal sequence for a second antenna; allocating each of the plurality of reference signal sequences to predetermined OFDM symbols and predetermined subcarriers, wherein the first reference signal sequence and the second reference signal sequence are allocated to same OFDM symbols and same subcarriers; and transmitting each of the plurality of reference signal sequences via the allocated OFDM symbols and subcarriers.