Patent ID: 8320488
Filing Date: 2012-11-27
Classification: H04B,H04L

Abstract:
1. A method for user equipment (UE) to receive signals transmitted from a base station, the method comprising: receiving information about the number of transmission antennas from the base station; and receiving signals based on an assumption that the base station transmits signals through precoding by using a matrix for large delay cyclic delay diversity (CDD) based precoding in a 2-transmit antenna, open-loop, spatial multiplexing (SM) transmission mode, wherein the matrix can be generated in a form of WDU in which a first matrix (W), a second matrix (D) corresponding to a diagonal matrix, and a third matrix (U) corresponding to a unitary matrix are sequentially multiplied, and wherein the UE assumes that the base station using the 2-transmit antenna, open-loop SM transmission mode fixedly uses the first matrix as an identity matrix (I) in the matrix for the large delay CDD based precoding.