| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance a reception adjacent channel interference characteristic among a plurality of terminals respectively individually belonging to cells existing in the vicinity of a plurality of adjacent frequency cell border areas in a broadband packet wireless communication system characterized in adopting a carrier sense multiple access system that is in operation on a tight frequency arrangement wherein an occupied bandwidth and a modulation side lobe of a modulation transmission reception wave is broad and a frequency channel interval is narrow. <P>SOLUTION: Narrow band channel filtering (using a filter (BPF or LPF) with a passband narrower than a passband equivalent to a one-channel occupied bandwidth) is applied to an RSSI (received signal strength indication) system, and a broad band filtering (using a filter (BPF and LPF) with a passband equal to or more than a passband equivalent to a one-channel occupied bandwidth) is applied to a reception demodulation system. <P>COPYRIGHT: (C)2004,JPO |
