| 摘要 |
PROBLEM TO BE SOLVED: To provide an adaptive array antenna receiving system capable of determining optimum directivity even if there exists jamming wave signals. SOLUTION: An antenna branch 55-i (i is integer from 1 to L) converts a time domain OFDM modulation signal received by an antenna 50-i into a frequency domain OFDM modulation signal, and inputs it in section extractors 90-i-1 to 90-i-v. The section extractors 90-i-1 to 90-i-v extract sections allocated to themselves from the inputted frequency domain OFDM modulation signal, and input them into pilot signal directivity determination receivers 1a-1 to 1a-v, respectively. The pilot signal directivity determination receivers 1a-1 to 1a-v determine directivity for the assigned section, and input the signal received by the directivity in an OFDM symbol regenerator 92. The OFDM symbol regenerator 92 regenerates the frequency domain OFDM modulation signal from the inputted signal for outputting. COPYRIGHT: (C)2007,JPO&INPIT
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