Samsung Electronics Co., Ltd.

Yeon-gon Cho

Jae-Ho Roh

Jun-haeng Cho

Yun-young Kim

Jae-hyun Koo

Dong-won Kwak

A signal acquisition apparatus and method for reducing a false alarm rate are disclosed. The apparatus includes a comparator for detecting a first peak by comparing a correlation value of a received signal with a first threshold and detecting second peaks in a sample interval of the detected first peak based on a second threshold which is different from the first threshold. Thus, a signal is acquired based on a number of the detected second peaks. Accordingly, the false alarm rate due to the noise can be reduced while the detection probability is maintained even at a high SNR.

Signal acquisition apparatus and method for reducing false alarm rate

A Viterbi decoder for executing a trace-back work in parallel and a decoding method. The Viterbi decoder includes a branch metric calculator which calculates a branch metric from a branch code passing each state on a trellis diagram and a predetermined input code, at least one adder/comparator/selector which adds the branch metric to a path metric of a previous state, detects a minimum value of the addition result values as a path metric of a current state, and detects state transition values corresponding to a path from which the minimum value has been detected, a path metric memory which stores the path metric detected by the at least one adder/comparator/selector, a plurality of trace-back memories which sequentially store the state transition values detected by the at least one adder/comparator/selector, and if the plurality of trace-back memories store the state transition values by a preset trace-back depth, a trace-back controller executes a trace-back work in parallel in each of the plurality of trace-back memories.

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Suwon-si, South Korea

Yeon-gon Cho