Method and apparatus for measuring and feeding back channel information in communication system using beam forming

摘要

A method of feeding back channel information by a receiver in a communication system beam forming is provided. The method includes determining an optimum reception beam using intensities of reference signals received through transmission beams of a base station for a first period through a first path for mapping analog beams of an input signal, and determining an optimum transmission beam of the transmission beams using intensities of reference signals received through the optimum reception beam for a second period through a second path for mapping analog beams of the input signal, and transmitting channel information measured by using a reference signal received through the optimum transmission beam and the optical reception beam to a transmitter.

主权项

1. A method for transmitting channel information by a receiver in a communication system using beam forming, the method comprising:
receiving reference signals transmitted through transmission beams of a transmitter by a first radio frequency chain using reception beams of the receiver during a first period; determining a reception beam among reception beams of the receiver based on receive strengths of the reference signals received by the first radio frequency chain; receiving reference signals transmitted through the transmission beams by a second radio frequency chain using the determined reception beam during a second period; determining a transmission beam among the transmission beams of a transmitter based on receive strengths of the reference signals received by the second radio frequency chain; and measuring a channel state based on a reference signal corresponding to determined transmission beam and the determined reception beam, and transmitting channel information related to the channel state to the transmitter.