Training signal detecting apparatus

Details Training signal detecting apparatus Training signal detecting apparatus

1990-11-07

1992-06-30

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

375 13, 375116, H03H 730, H04L 704

Patent

active

051270277

ABSTRACT:
There is provided a training signal detecting apparatus which detects a repetitive pattern segment included in a reception signal. The apparatus comprises: a receiving unit to receive a training signal; a generator to generate a timing phase error signal according to a sampling timing phase difference between a transmitter and a receiver on the basis of the received training signal; and a detecting unit to generate a detection signal indicative of the detection of a repetitive pattern segment in the training signal when it is determined that a magnitude of the timing phase error signal is larger than a predetermined threshold value. With the apparatus, even if a color noise or a single tone signal is included in a reception signal, a desired repetitive pattern segment can be accurately detected with a small hardware scale of a reception side modem.

REFERENCES:
patent: 4577334 (1986-03-01), Boer et al.
patent: 4608703 (1986-08-01), Kaga et al.
patent: 4796279 (1989-01-01), Betts et al.
patent: 4847800 (1989-07-01), Kamerman et al.
patent: 4849989 (1989-07-01), Kamerman
patent: 4956851 (1990-09-01), Wolensky et al.

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