| 摘要 |
PROBLEM TO BE SOLVED: To detect a subject to be analyzed included in a signal transmitted from a transmitter and to analyze a signal at high speed in a digital radio communication system. SOLUTION: An analog signal is converted into a digital signal by using an A/D converter 12, the digital signal is stored in wave form memory 13, control and an arithmetic operation of each part are performed in an arithmetic unit 17, a frame pulse approximated to a frame cycle of the signal transmitted from the transmitter is generated from a frame pulse generating part 14 and time from a position to a synchronization word of the signal taken in the wave form memory is calculated. Consequently, the position of the slot used by the used signal transmitted from the transmitter is defined from the frame pulse, the used slot included in the signal transmitted from the transmitter to be analyzed is stored in the wave form memory by setting the time of taking in the synchronization word in a timing generation part 15 to control the timing of taking the signal in the wave form memory, therefore, if only the synchronization word is detected once, detection of the synchronization word is unnecessitated from the next time on and the synchronization word is measured at high speed. |
