Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Patent
1993-05-19
1995-11-07
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
4552263, 375346, 375348, H04B 110
Patent
active
054654122
ABSTRACT:
In a receiver (101) that receives a signal (103) subsequent to transmission thereof by a transmitter on a communication channel, an apparatus and method for determining a point in time for detecting the signal, sampled at multiple points in time, to produce a detected signal (112). The communication channel is modeled, at the multiple points in time, responsive to the sampled signal (110) to produce signal and noise channel models (209) and (204), respectively. Signal and noise values (210) and (205) indicative of the quantity of signal and noise in the signal and noise channel models, respectively, are generated. A sampling point selector (203) selects, from among the multiple points in time, a point in time (111), corresponding to a determined minimum noise value (206) or a determined maximum signal to noise ratio value (213), for detecting the sampled signal (110) to produce the detected signal (112).
REFERENCES:
patent: 4768208 (1988-08-01), Cornett
patent: 5091918 (1992-02-01), Wales
patent: 5164964 (1992-11-01), Kubo
patent: 5191598 (1993-03-01), Backstrom et al.
patent: 5263026 (1993-11-01), Parr et al.
Baum Kevin L.
Mueller Bruce D.
Eisenzopf Reinhard J.
Kaschke Kevin D.
Motorola Inc.
To Doris
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