Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-05-23
2006-05-23
Chin, Stephen (Department: 2634)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S142000, C455S562100
Reexamination Certificate
active
07050482
ABSTRACT:
In order to perform synchronization detection with high speed, high precision and high reliability and to measure communication quality (propagation characteristics) at high precision and high efficiency, a mobile station includes synchronization detecting portion for detecting synchronization chip timing of channel to be measured, a synchronization chip timing information portion accumulating information of detected synchronization chip timing, a correlation detecting portion deriving a correlation value between spreading code of the channel to be measured and a received signal for performing communication with a base station and measurement of communication quality with taking the detected synchronization chip timing as a reception chip timing, a time series generating portion for generating a time series data of received signal vector after correlation detection, and a communication quality calculating portion for calculating communication quality from generated time series data.
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Imai Tetsuro
Mori Shinichi
Chin Stephen
NTT DoCoMo Inc.
Ware Cicely
Workman Nydegger
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