The Double-readout Trace-back Algorithm for Viterbi Decoder and Its Complementation in ASIC
Sheng Shimi · Acta Scicentiarum Naturalum Universitis Pekinesis · 1996
A novel double-readout trace-back (DRTB) algorithm that used in Viter-bi Decoder for likelihood path series searching is developed by analyzing the rule oftrace-back operation.It increases the throughput rate up to 4 times without any ad-ditonal hardware overhead.The structural ASIC design of surviving path memoryunit (SMU) toward DRTB algorithm is described and it is applied in a Viterbi De-coder IC design.With being fabricated,the test results indicate that the DRTB al-gorithm and circuit design are successful as prediction.