| 摘要 |
PROBLEM TO BE SOLVED: To make mobile station equipment able to efficiently measure the noise (interference signal) power of the present station without reserving a specified spread code for interference power measurement in a system. SOLUTION: In this mobile station equipment of a mobile communication system for which a base station and plural mobile stations inside the service area are connected by a DS-CDMA (direct spread-code division multiple access) system, transmission signals from the base station are spread by mutually orthogonal codes and all transmission timings are synchronized, a signal power measurement part for measuring signal power around the center frequency for signals for which the reception signals r(t) of the present station are inversely spread by a specified spread code Ci is provided. Further, a measurement control part for successively measuring each corresponding signal power (p) through the signal power measurement part for all the spread codes c1-cN usable inside the service area and judging that the spread code Ck corresponding to minimum signal power among the obtained signal power is in nonuse inside the service area is provided. |
