Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2006-06-13
2006-06-13
Ghebretinsae, Temesghen (Department: 2637)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S262000, C714S795000, C714S796000
Reexamination Certificate
active
07062000
ABSTRACT:
In a Viterbi decoder a bit range converter (11) is provided for converting a bit range of the branch metric values calculated by a branch metric calculator (1) to meet the number of calculation bits used in an ACS portion (2). The bit range converter (11) is provided between branch metric calculator (1) and ACS portion (2). The decoder reads the received data and calculates the branch metrics, optimizes the branch metrics, changes the path metric, and stores it into the path memory until the frame is completed. When one frame has been completed the decoded result is output by backtracing.
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