| 摘要 |
<p>In a broadband packet radio communication system characterized by the carrier sense multiple access method operated on a harsh frequency arrangement where an occupied band width of modulation transmission/reception waves and modulation sidelobe are wide and the frequency channel interval is narrow, the reception adjacent channel interference characteristic among a plurality of terminals belonging to respective cells existing in the vicinity of the adjacent frequency cell boundary area is improved. In the RSSI system, narrowband channel filtering is performed (with a narrowband filter (BPF or LPF) having a passband narrower than one-channel occupied band width), while in the reception/ demodulation system, wideband channel filtering is performed (with a wideband filter (BPF or LPF) having a passband equal to or wider than the one-channel occupied bandwidth). <IMAGE></p> |
