RANK ESTIMATION APPARATUS, RECEIVER, COMMUNICATION SYSTEM, RANK ESTIMATION METHOD, AND PROGRAM RECORDING MEDIUM

摘要

A rank estimation device in which a load on a rank estimation process can be reduced is provided. The rank estimation device of the exemplary embodiment is characterized by comprising a SNR estimation section which calculates a communication quality value, a channel variation estimation section which calculates a variation value that varies at a receiver, and a simplified rank estimation section which estimates a transmission rank based on the communication quality value calculated by the SNR estimation section and the variation value calculated by the channel variation estimation section.