A wireless communication apparatus including a plurality of input ports and a plurality of output ports, the wireless communication apparatus inputting, for each input port, an analog signal with a plurality of signals multiplexed thereon by a frequency division multiplexing method, the wireless communication apparatus comprising: - a plurality of A/D conversion units, each A/D conversion unit being configured to receive the analog signal from the respective input port and adapted to convert the analog signal that has been input to a digital signal; - a plurality of demultiplexing units, each demultiplexing unit being configured to receive the digital signal from a respective A/D conversion unit and adapted to separate the digital signal that has been input into the plurality of signals; - a plurality of prestage rearrangement units, each prestage rearrangement unit being configured to receive the plurality of signals from a respective demultiplexing unit and adapted to rearrange and output, to a switch unit, the plurality of signals that have been input from the demultiplexing unit, as a plurality of prestage rearranged signals; - the switch unit configured to receive the plurality of prestage rearranged signals output from the plurality of prestage rearrangement units and adapted to apply switching processes to the plurality of prestage rearranged signals and output, to a plurality of poststage rearrangement units, a plurality of switched signals; - the plurality of poststage rearrangement units, each poststage rearrangement unit being configured to receive the plurality of switched signals output from the switch unit and adapted to rearrange the plurality of switched signals that have been input and to output a plurality of poststage rearranged signals; - a plurality of multiplexing units, each multiplexing unit being configured to receive the plurality of poststage rearranged signals output from a respective poststage rearrangement unit and adapted to multiplex the plurality of poststage rearranged signals that have been input, by the frequency division multiplexing method; and - a plurality of D/A conversion units, each D/A conversion unit being configured to receive and convert the digital signal obtained from a respective multiplexing unit to an analog signal and to provide the analog signal to a respective output port. - a plurality of A/D conversion units, each A/D conversion unit being configured to receive the analog signal from the respective input port and adapted to convert the analog signal that has been input to a digital signal; - a plurality of demultiplexing units, each demultiplexing unit being configured to receive the digital signal from a respective A/D conversion unit and adapted to separate the digital signal that has been input into the plurality of signals; - a plurality of prestage rearrangement units, each prestage rearrangement unit being configured to receive the plurality of signals from a respective demultiplexing unit and adapted to rearrange and output, to a switch unit, the plurality of signals that have been input from the demultiplexing unit, as a plurality of prestage rearranged signals; - the switch unit configured to receive the plurality of prestage rearranged signals output from the plurality of prestage rearrangement units and adapted to apply switching processes to the plurality of prestage rearranged signals and output, to a plurality of poststage rearrangement units, a plurality of switched signals; - the plurality of poststage rearrangement units, each poststage rearrangement unit being configured to receive the plurality of switched signals output from the switch unit and adapted to rearrange the plurality of switched signals that have been input and to output a plurality of poststage rearranged signals; - a plurality of multiplexing units, each multiplexing unit being configured to receive the plurality of poststage rearranged signals output from a respective poststage rearrangement unit and adapted to multiplex the plurality of poststage rearranged signals that have been input, by the frequency division multiplexing method; and - a plurality of D/A conversion units, each D/A conversion unit being configured to receive and convert the digital signal obtained from a respective multiplexing unit to an analog signal and to provide the analog signal to a respective output port.