Spread spectrum correlator

Details Spread spectrum correlator Spread spectrum correlator

1989-08-07

1991-06-04

Cangialosi, Salvatore

Pulse or digital communications

Repeaters

Testing

380 34, H04K 102

Patent

active

050220470

ABSTRACT:
An apparatus for decoding a received spread spectrum signal having a data signal modulated with a pseudo-noise code and transmitted as an RF spread spectrum signal. A first reference register holds a first pseudo-noise signal, a second reference register holds a second pseudo-noise signal, and a receive-register holds a received spread spectrum signal. A first modulo adder adds each chip of the received spread spectrum signal with each respective chip of the first pseudo-noise signal, thereby generating a first plurality of chip-comparison signals. A first summer adds the first plurality of chip-comparison signals, generating a first correlation signal. The comparator compares the correlation signal to an upper-threshold level and a lower-threshold level, and respectively generates a first data-symbol signal or a second data-symbol signal.

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Spread Spectrum Systems, by Robert C. Dixon, pp. 230-232.

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