Abstract: A radio communication device switches a frequency channel to be used by using a predetermined hopping pattern during communication with a counterpart radio communication device, and includes a null determination unit that determines a position of a null symbol included in a received packet from the counterpart radio communication device and an interference measuring unit that measures an interference amount by using the null symbol included in the received packet.

Abstract: A receiver that is a communication apparatus includes a plurality of receiving antennas that receives, as reception signals, interference signals and desired signals transmitted by a transmitting apparatus that performs sequence multiplication processing at the time of transmission, and an interference suppressor that generates, for each of the receiving antennas, a weight used when combining the reception signals received by the respective receiving antennas, and performs inter-antenna combining that is combining of the reception signals, using the weights, to perform interference suppression on the reception signals.

Abstract: A radio communication device switches a frequency channel to be used by using a predetermined hopping pattern during communication with a counterpart radio communication device, and includes a null determination unit that determines a position of a null symbol included in a received packet received from the counterpart radio communication device and an interference measuring unit that measures an interference amount by using the null symbol included in the received packet.