Performance of the Viterbi Decoder using Analog Parallel Processing circuit with Reference position

아날로그 병렬 처리 망을 이용한 비터비 디코더의 기준 입력 인가위치에 따른 성능 평가

A high speed Analog parallel processing-based Viterbi decoder with a circularly connected 2D analog processing cell array is proposed. It has a 2D parallel processing structure in which an analog processing cell is placed at each node of trellis diagram is connected circulary so that infinitively expanding trellis diagram is realized with the fixed size of circuits. The proposed Viterbi decoder has advantages in that it is operated with better performance of error corrections, has a shorter latency and requires no path memories. In this parer, the performance of error correction as a reference position with the Analog parallel processing-based Viterbi decoder is testd via the software simulation