| 摘要 |
PROBLEM TO BE SOLVED: To provide a system that simulates a propagation environment close to a real environment in order to conduct a connection test between a base station with an adaptive array antenna mounted thereon and a mobile station. SOLUTION: An outgoing signal from the base station is distributed to a propagation path Z1-N-M-O, the phase is converted by a phase converter C1-N-M-O on each propagation path Z1-N-M-O, delayed by a delay element S1-N-M-N-O, attenuated by an attenuator E1-N-M-O, and coupled to an input signal by each mobile station and given to the mobile station. On the other hand, an incoming signal from the mobile station is distributed to a propagation path Z2-N-M-O, attenuated by an attenuator E2-N-M-O, delayed on a delay element D2-N-M-O, the phase is converted by a phase converter C2-N-M-O, and the signal is coupled to the input signal by each antenna array element of each base station and given to the base station. A control section P controls each phase converter, each delay element and each attenuator. |
