Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2005-06-28
2005-06-28
Bayard, Emmanuel (Department: 2631)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S265000
Reexamination Certificate
active
06912257
ABSTRACT:
Disclosed is a method for normalizing metric values in a decoder which uses a plurality of metric values of a next state in a state transition period having a present state and the next state, each metric value having a survival path metric value having a value equal to or higher than a competition path metric value. The method comprises detecting the survival path metric values out of the metric values; detecting a minimum survival path metric value out of the detected survival path metric values; determining whether the detected minimum survival path metric value exceeds a threshold value; and subtracting, when the minimum survival path metric value exceeds the threshold value, a given normalization value from the metric values, to output normalized metric values. Also disclosed is another method for: normalizing metric values in a decoder which uses a plurality of metric values of a next state in a state transition period having a present state and the next state, each metric value having a survival path metric value having a value equal to or higher than a competition path metric value. The method comprises detecting the competition path metric values out of the metric values; detecting a minimum competition path metric value out of the detected competition path metric values; determining whether the detected minimum competition path metric value is greater than a threshold value; and subtracting, when the minimum competition path metric value is greater than the threshold value, a given normalization value to output normalized metric values.
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Japanese Office Action dated Jun. 24, 2003 issued in a counterpart application, namely Appln. No. 2000-616131.
Kim Beong-Jo
Kim Min-Goo
Lee Ynung-Hwan
Bayard Emmanuel
Dilworth & Barrese LLP
Samsung Electronics Co,. Ltd.
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