Howtosignalprocessing
- What are the steps used in Viterbi algorithm?
- What do you mean by Viterbi algorithm?
- Is Viterbi algorithm greedy?
- Why is Viterbi algorithm important?
What are the steps used in Viterbi algorithm?
In such systems, data are encoded firstly with a Reed-Solomon code, then they are processed by an interleaver (which places symbols from the same Reed-Solomon codeword far from each other), and then encoded with a convolutional code. At the receiver, data are firstly processed by a Viterbi decoder.
What do you mean by Viterbi algorithm?
The Viterbi algorithm is a dynamic programming algorithm for obtaining the maximum a posteriori probability estimate of the most likely sequence of hidden states—called the Viterbi path—that results in a sequence of observed events, especially in the context of Markov information sources and hidden Markov models (HMM).
Is Viterbi algorithm greedy?
The Viterbi algorithm is not a greedy algorithm. It performs a global optimisation and guarantees to find the most likely state sequence, by exploring all possible state sequences. An example of a greedy algorithm is the one for training a CART.
Why is Viterbi algorithm important?
The Viterbi Algorithm has been used in space communications, voice recognition, data recording, search, DNA sequencing and even HBO's satellite beaming of “The Sopranos” and “Westworld.” Fifty years ago, Viterbi, Ph. D. '62, was looking for a better way to explain complex convolutional codes to his students.
