Patent ID: 7848711

Claim:
A radio communication apparatus for performing transmission and reception based on radio communication, comprising: a power suppressor that attenuates signal power of a received signal in order to suppress a coupling loop interference signal power of the received signal; a transceiver having a coupling loop interference signal removal function for the analog domain and a coupling loop interference signal removal function for the digital domain, for removing a coupling loop interference signal contained in a signal output from the power suppressor, the transceiver comprising an analog signal processor configured to remove, in the analog domain, the coupling loop interference signal contained in the signal output from the power suppressor; a baseband signal processor having a transmission baseband signal processor and a received baseband signal processor, wherein the baseband signal processor is configured so that output from the received baseband signal processor is input into the transmission baseband signal processor; a fluctuation determiner that determines a received signal power fluctuation speed by employing an output signal on which interference removal for analog domain has been performed by the transceiver; a power determiner that determines a ratio of residual interference signal power in the output signal power on which interference removal for the digital domain has been performed by the transceiver; and a transmission propriety/impropriety decider that determines the propriety of transmission from the transmission baseband signal processor in accordance with at least one of whether or not the received signal power fluctuation speed determined by the fluctuation determiner is equal to or greater than a predetermined standard value and whether or not the ratio of residual interference signal power determined by the power determiner is equal to or greater than a predetermined standard value, wherein the transmission baseband signal processor is configured to perform an execution/stoppage control of the signal transmission in response to the transmission propriety result decided by the transmission propriety/impropriety decider.