Improvement of throughput for a radio system using a multiplex access combined with SDMA

摘要

Radio frequency signals are transmission-receiving processed by N antennas. A radio unit (12) performs a frequency translation processing, an amplification processing and an A-D or D-A conversion processing between a baseband signal and the radio frequency signal. A signal processing unit (14) performs a signal processing necessary for the transmission/receiving processing by adaptive array antennas. A modem unit (16) performs modulation/demodulation processings. A baseband unit (18) serves as interface with a network. A control unit (20) controls timings, channel allocation and the like of the radio unit (12), the signal processing unit (14), the modem unit (16) and the baseband unit (18). <IMAGE>