Data transmission system using spread spectrum communication

Details Data transmission system using spread spectrum communication Data transmission system using spread spectrum communication

1990-02-12

1991-06-11

Buczinski, Stephen C.

Pulse or digital communications

Repeaters

Testing

380 50, H04K 100

Patent

active

050238876

ABSTRACT:
In response to a bit transfer request from one of two units, bit data is transmitted bit by bit from the other of the two units. The unit on the transmission side for transmitting the bit data has an M-series generator. In response to bit 1, a first M.sub.0 -series signal of a 63-word length is generated. In response to bit 0, a second M.sub.0 -series signal in which the series start position is set to the intermediate position of the first M.sub.0 -series signal, although the signal is the same M.sub.0 -series signal of the 63-word length, is generated. The unit on the reception side has previously stored the first and second M.sub.0 -series signals on the transmission side as reference signals, and calculates the correlations between the two reference signals and the reception signal, and demodulates the data bit corresponding to the reference signal having a larger correlation value.

REFERENCES:
patent: 4864589 (1989-09-01), Endo
patent: 4903279 (1990-02-01), Murakami et al.
patent: 4932057 (1990-06-01), Kolbert

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