Symbol timing detection method and apparatus, and preamble...

Details Symbol timing detection method and apparatus, and preamble... Symbol timing detection method and apparatus, and preamble...

2007-08-17

2010-10-26

Ahn, Sam K (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

Reexamination Certificate

active

07822152

ABSTRACT:
A symbol timing detection method, executed in a processor, is provided where, upon detecting a symbol timing from a received signal composed of a packet having a preamble with periodically allocated symbols placed at a head of data, correlation results indicating a correlation between the received signal and a fixed pattern of the preamble are obtained, a maximum value in the correlation results are updated and held, and a timing of the maximum value is determined as a symbol timing on a condition that a maximum value currently held by the correlation peak detection unit is not updated in a symbol timing determination period having a predetermined length from the timing and that a number of occurrences of a correlation result exceeding an error detection determination threshold is smaller than a predetermined number in an error detection determination period defined within the symbol timing determination period.

REFERENCES:
patent: 7190728 (2007-03-01), Kawada et al.
patent: 2005/0220230 (2005-10-01), Fukuda
patent: 2006/0039453 (2006-02-01), Yamada
patent: 2005-39597 (2005-02-01), None
Zhou et al. A New Symbol Timing Synchronization for OFDM Based WLANS Under Multipath Fading Channels, IEEE, 2004, p. 1210-1214.

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