System for estimating signals received in the form of mixed sign

Details System for estimating signals received in the form of mixed sign System for estimating signals received in the form of mixed sign

1996-02-20

1999-06-01

Vo, Nguyen

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455 673, 706 22, H04B 1500

Patent

active

059096462

ABSTRACT:
Source separation system for processing input signals (E.sub.i (t)) formed by instantaneous linear mixtures of primary signals (X.sub.j (t)) that result from sources (S1-Sn) and for producing at least one estimated primary signal (x.sub.k (t)) . The system includes separation apparatus (10) and characterization apparatus (15) which determine cumulants of the input signals for extracting estimated mixing coefficients (.alpha..sub.ij). The coefficients are transformed into separation coefficients (C.sub.ki, d.sub.ki) in the separation apparatus (10). The separation apparatus (10) may have a direct structure or a recursive structure.

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Lacoume et al., "Separation of Independent Sources From Correlated Inputs", IEEE Transactions on Signal Processing, vol. 40, No. 12, Dec. 1992, pp. 3074-3078.

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