Bit and symbol timing recovery for sequential decoders

Abstract From the Canadian patent

Bit and Symbol Timing Recovery for Sequential Decoders" ABSTRACT OF THE DISCLOSURE, In a sequential decoding apparatus a sequential decoder performs, sequential decoding on convolutional code symbols stored in a data buffer according to the maximum likelihood algorithm. When the buffer is overflowed due to random noise, the sequential decoder skips a portion of the stored symbols, clears its internal state and initiates a stepwise decoding of newly arrived symbols. A sync detector detects that a count of symbols that have been decoded after the occurrence of the overflow is lower or higher than a predetermined value. If the overflow condition still exists following the stepwise decoding a …