Patent ID: 6601215
Filing Date: 2003-07-29
Classification: H03M

Abstract:
Apparatus for Viterbi decoding of an encoded signal represented as a time-sequence of coded symbols, comprising:a processor receiving said encoded signal and generating therefrom a time-sequence of trellis-state decision records; a buffer receiving and storing in an array said time-sequence of trellis-state decision records, wherein: said buffer comprises a plurality of indexed-buffer registers each storing a predetermined one of said plurality of trellis-state decision records; each such indexed-buffer register responsive to a first and a second write pointer signal; said first write pointer signal pointing to one of said plurality of indexed-buffer registers as the shifted starting point of said time-sequence array; and said second write pointer signal pointing to the index within each of said buffer registers for storage of said trellis-state decision records; and a traceback unit operatively connected to said buffer tracing back a path in said array representing a most-likely survivor path and generating therefrom a decoded signal.