2017/09/11
Principle of Partial Response Maximum Likelihood (PRML)
This simple example demonstrates the principles of ML detection:
Decisions are made based on a sequence of samples, instead of one current sample. For each sequence of samples a list of allowable sequences is generated. Each of the allowable sequences is compared with the received sequence and SSE (or any other distance function) is calculated.
The sequence having the minimum distance (maximum likelihood) is selected to be the
result of the detection.
What should be stressed here is that the Viterbi algorithm is only (although smart and ingenious) a practical realization of the Maximum Likelihood detection principle which opened the way for effective real-time data detection.
Reference
http://www.lintech.org/comp-per/09PRML.pdf
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