| 摘要 |
<p>The invention comprises a method and apparatus for decoding an incoming symbol stream comprised of a polarity of known missing symbols. Within the incoming symbol stream, those symbols corresponding the known missing symbols are replaced with a first set of values to create a modified symbol stream. The modified symbol stream is convolutionally decoded to produce a first decoded information bit stream. An error detection mechanism is performed on the first decoded information bit stream to determine a 'pass' or 'fail' indication. If the error detection mechanism produces a 'fail' indication, a second set of values replaces the known missing symbols to produce a second modified symbol stream. The second modified symbol stream is convolutionally decoded to produce a second decoded information bit stream. The error detection mechanism is performed on the second decoded information bit stream. If the error detection mechanism produces a 'pass' indication, the second decoded information bit stream is passed to the next processing layer. Additional repetitions can be completed until an error free decode is obtained or a predetermined number of attempts is completed without a 'pass'.</p> |
