US2015304012A1

5G,4G

Title

METHOD AND APPARATUS FOR CORRECTING ERRORS IN A MULTIPLE SUBCARRIERS COMMUNICATION SYSTEM USING MULTIPLE ANTENNAS

Application Number:

US201514789746

Publication Date:

22-10-2015

Current Assignee:

LG

Family ID:

38895018

Application Date:

01-07-2015

Publication Country:

US

View on Espacenet

Priority Date:

06-07-2006

Declaring Company:

LG

Abstract  Abstract

A method for correcting errors in a multiple antenna system based on a plurality of sub-carriers and a transmitting/receiving apparatus supporting the same are disclosed. The method includes determining a phase shift based precoding matrix phase shifted at a predetermined phase angle initially transmitting each sub-carrier symbol to a receiver in a packet unit by using the phase shift based precoding matrix reconstructing the phase shift based precoding matrix to reduce a spatial multiplexing rate if a negative reception acknowledgement (NACK) is received from the receiver and retransmitting the initially transmitted sub-carrier symbol by using the reconstructed phase shift based precoding matrix or by changing the phase shift based precoding matrix using offset information fed back from the receiver or random offset information.

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