Cross-term compensation power adjustment of embedded auxiliary d

Details Cross-term compensation power adjustment of embedded auxiliary d Cross-term compensation power adjustment of embedded auxiliary d

1997-02-25

1999-08-17

Le, Amanda

Pulse or digital communications

Repeaters

Testing

375208, 375285, 375296, 370527, 370529, 455105, H04K 110

Patent

active

059404299

ABSTRACT:
An auxiliary data signal is transported with a primary data signal by hiding the auxiliary data signal in the form of colored noise. The colored noise has a spectrum that simulates the spectrum of the primary data signal. By adjusting the gain of individual spread spectrum signal carrier(s) and the power of the colored noise, the auxiliary information stream(s) can be rendered at any desired level below or above an interference threshold in the primary data signal. The power of the colored noise is further compensated to account for a cross-correlation between the primary data signal and the auxiliary data signal to enhance the recovery of the auxiliary data at a decoder.

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