Code synchronous timing determining method upon information...

Details Code synchronous timing determining method upon information... Code synchronous timing determining method upon information...

2006-06-27

2006-06-27

Tran, Khai (Department: 2637)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S130000, C370S342000

Reexamination Certificate

active

07068709

ABSTRACT:
A code synchronous timing determining method comprising acquiring correlation values of a code at plural timings in each of a plural given time widths included in a given period, storing the correlation values corresponding to the plural timings, retrieving the maximal correlation value from the stored correlation values to register a retrieved timing corresponding to the maximal correlation value as the maximal timing, scanning the stored correlation values in a given direction to detect at least one minimal correlation value to register a retrieved timing corresponding to the detected minimal correlation value, extracting at least one correlation value selected from the correlation values stored at plural timings having a specified time interval from the maximal timing to the minimal timing as a high correlation value candidate, and holding timing data corresponding to the high correlation value candidate as timing information of code synchronism.

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V. Tuukkanen, et al., IEEE 6thInternational Conference on Universal Personal Communications Record, pp. 698-702, XP-010248798, “Combined Interpolation and Maximum Likelihood Symbol Timing Recovery in Digital Receivers”, Oct. 12, 1997.

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