Title:
CDMA SYNCHRONIZATION ACQUISITION CIRCUIT
Document Type and Number:
Japanese Patent JPH1117648
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To allow a CDMA(code division multiple access) synchronization acquisition circuit to shorten the processing time for maximum peak position detection processing. SOLUTION: A correlation device 24 uses a small amount of reception data for correlation value peak position detection processing with respect to a predetermined search range for conducting correlation calculation, thereby obtaining a higher-order tentative peak position with high correlation. A correlation device 29 obtains a remaining correlation value with priority from a tentative peak position based on remaining reception data, adds outputs of two correlation devices to finally obtain a peak value from the correlation level. Thus, the arithmetic amount is reduced.
Inventors:
YANAGI SHUZO
Application Number:
JP16740197A
Publication Date:
January 22, 1999
Filing Date:
June 24, 1997
Export Citation:
Assignee:
NEC CORP
International Classes:
H04J13/00; H04B1/7075; H04B7/26; H04L7/00; H04W56/00; (IPC1-7): H04J13/00; H04B7/26; H04L7/00