CHANNEL INFORMATION COMPRESSING APPARATUS AND METHOD, CHANNEL INFORMATION DECOMPRESSING APPARATUS AND METHOD, RECEIVER, AND TRANSMITTER

摘要

A channel information compressing apparatus comprises: a DCT unit for discrete cosine transforming channel information (CSI) representative of the status of a communication channel; and an information compressing unit for compressing high-frequency component information included in the discrete cosine transformed data obtained by use of the discrete cosine transforming. The information compression is performed with the precision of the channel information well maintained.