Communications – electrical: acoustic wave systems and devices – Underwater system – Telemetering
Patent
1993-09-28
1995-07-11
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Underwater system
Telemetering
H04B 1100
Patent
active
054327547
ABSTRACT:
A multiuser receiver for use in additive white Gaussian noise, multiple-access communication channels. The receiver includes an interference estimator which estimates multiple-access interference signals using a variable weighting provided by a soft decision processor. The interference estimator may receive signals from matched-filter/sample-and-hold circuits, decorrelator circuits, or sliding-window-decorrelator circuits. The soft decision processor is provided having a soft-decision nonlinearity characteristic, which may correspond to a multilevel quantizer characteristic, a dead-zone nonlinearity characteristic, or a linear clipper characteristic.
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Brady David P.
Zhang Xuming
Northeastern University
Pihulic Daniel T.
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