DEVICE FOR GENERATING A CODEBOOK, A METHOD FOR GENERATING A CODEBOOK AND A METHOD FOR TRANSMITTING DATA, CAPABLE OF OBTAINING OPTIMAL TRANSMISSION EFFICIENCY WHEN RETRANSMITTING A SIGNAL IN CASE OF INITIAL TRANSMISSION FAILURE

摘要

PURPOSE: A device for generating a codebook, a method for generating a codebook and a method for transmitting data are provided to select an optimal pre-processing matrix, thereby obtaining transmission efficiency.;CONSTITUTION: A frequency determining unit(110) decides a frequency which makes a transmission codebook to have an optimal feature. A pre-processing matrix generating unit(120) generates a pre-processing matrix based on the frequency. A codebook generating unit(140) generates a retransmission codebook used in retransmission based on the pre-processing matrix. The codebook generating unit generates the transmission codebook based on the retransmission codebook. When the minimum distance of the transmission codebook becomes maximum, the transmission codebook has the optimal feature.;COPYRIGHT KIPO 2010