| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wireless apparatus for keeping superior communication quality, by preventing a swap among mobile communication terminals that communicate with a base station. <P>SOLUTION: In user signal processing units USP1 and USP2 of a wireless apparatus 1000, a signal from antennae #1 to #4 is multiplied by a weight vector to extract a signal from a specified terminal, and a frequency offset for each terminal is extracted at prescribed timing. A swap detecting unit SDP detects a swap according to conditions that a frequency offset in accordance with one of terminals is observed at a prescribed frequency or larger in a prescribed range based on a frequency offset of another terminal as a reference, and a receiving error occurs at a prescribed rate or larger in the received signal of another terminal. <P>COPYRIGHT: (C)2003,JPO |
