Figure 2 shows the branch metric diagram for an 8-level decoder. A number of different measures such as Euclidean distance or Manhattan distance can be used to generate the branch metrics. Figure 2: ...

Viterbi algorithm is used in the Viterbi decoder for decoding a bit stream that has been encoded using FEC based on a Convolutional code. Below Figure shows the block diagram of Viterbi decoder. It ...

Hard-decision Viterbi decoding. ... You can derive the branch word from the trellis or state diagram; the branch word depends on the ... such as 16´8, 32´4, and 64´8. Xilinx FPGAs implement 16´2 RAM ...

Lattice's Viterbi Decoder is a parameterizable IP core with an efficient algorithm for decoding different combinations of convolutionally-encoded sequences. (Convolutional encoding is a process of ...

For each state in the trellis diagram of Viterbi decoding, current path metrics are obtained from current branch metric and path metrics of the previous states, ... “A 1-Gb/s, four-state, sliding ...

Besides, decoding is executed by the Viterbi algorithm not taking into account a block structure of the code but decoding an ordinary infinite sequence. The analysis of the suggested decoder ...

It is shown that Viterbi decoders using this storage-efficient path memory unit require a smaller chip area and achieve a faster decoding time without loss of decoding performance. A Viterbi decoder ...

One way to optimize the Viterbi algorithm is to simplify the trellis diagram by reducing the number of states and branches. This can be done by using punctured codes, which skip some of the ...

A high speed and low power Viterbi decoder architecture design based on deep pipelined, clock gating and toggle filtering has been presented in this paper. The Add-Compare-Select (ACS) and Trace Back ...