Title:
スペクトラム拡散信号の拡散符号同期検出方法および装置
Document Type and Number:
Japanese Patent JP4617618
Kind Code:
B2
Abstract:
A spreading-code synchronization detection method for a spectrum spreading signal, which increases the sensitivity of spreading-code synchronization detection. In this method, spreading-code synchronization detection is applied to a spectrum spreading signal obtained by spectrum-spreading data having a bit transition period equal to a multiple of one period of a spreading code with the spreading code. A process for obtaining a liner-addition correlation-calculation result equal to a value obtained by linear additions of the results of correlation calculations between the spectrum spreading signal and the spreading code is performed every unit period which is a multiple of one period of the spreading code and shorter than the bit transition period. The absolute value of the liner-addition correlation-calculation result obtained every unit period is calculated. The absolute value of the liner-addition correlation-calculation result obtained every unit period is added for a plurality of unit periods. A correlation point is detected from a value obtained by adding the absolute values.
Inventors:
Katsuyuki Tanaka
Application Number:
JP2001225317A
Publication Date:
January 26, 2011
Filing Date:
July 26, 2001
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04B1/7075; G01S1/00; H04B1/707; H04B1/709; H04L7/00; H04W56/00; H04W64/00; H04W76/02
Domestic Patent References:
| JP2000193735A | ||||
| JP10246768A | ||||
| JP10282210A | ||||
| JP4302234A |
Foreign References:
| WO1998002830A1 | ||||
| WO2000010030A1 |
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara
Tetsuo Kanamoto
Koji Hagiwara