RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION SYSTEM

摘要

A radio communication apparatus that can more precisely grasp, in a case of using a plurality of antenna elements to receive radio signals, the reception qualities of the respective antenna elements to improve the error rate of received signals. In the apparatus, a lower-order bit likelihood extracting part (107) extracts, based on a multi-level modulation scheme of data (ch) notified by a modulation scheme determining part (106), the likelihood of LSB only or the likelihood of LSB to two bits from all bit likelihood received from a bit likelihood calculating part (104), and then inputs the extracted likelihood to a distribution calculating part (108), which is then calculates the distribution of the likelihood for each antenna element.