Method and apparatus for recognizing in a receiver the start of

Details Method and apparatus for recognizing in a receiver the start of Method and apparatus for recognizing in a receiver the start of

1982-11-09

1985-03-19

Griffin, Robert L.

Pulse or digital communications

Spread spectrum

Direct sequence

364728, 371 46, H04L 700

Patent

active

045063729

ABSTRACT:
In an apparatus and a method for recognizing the start of a noise-corrupted received telegram signal, and wherein the telegram signal consists of an information-containing sequence of bits ahead of the telegram signal, thereafter transmitting an intermediate sequence of bits following the preliminary sequence, but still ahead of the telegram signal, wherein the preliminary and the intermediate sequences are correlated with different parts of the preliminary and of the intermediate sequence in a pre-arranged manner, and detecting the pre-arranged manner so as to positively signal termination of the intermediate sequence; recognition of the start of the telegram signal is thereby ensured.

REFERENCES:
patent: 3251034 (1966-05-01), Goode et al.
patent: 3317669 (1967-05-01), Ohnsorge
patent: 4079195 (1978-03-01), Frutiger
patent: 4168529 (1979-09-01), Tomlinson
patent: 4214209 (1980-07-01), Baier et al.
patent: 4280222 (1981-07-01), Flower
Chip Looks for 64-Bit Word, Electronics Int., Oct. 23, p. 260.
Branch Synchronization Schemes for Convolutional Codes, Wai-Hung Ng. Proc. I.E.E., Jun. 1976, pp. 481-484.
Nachrichten techn.Zeitschrift, Gerhard Groth, vol. 32, (1979), Issue 2, pp. 86-88.

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