Digital signal symbol decision generation with corresponding confidence level
A receiver to generate a first vector of a first sequence of a portion of symbols of a signal. The receiver further generates a second vector of a second sequence of the portion of symbols, wherein the second sequence comprises a flipped version of the first sequence. Based at least in part on the first vector and the second vector, a decision including a sequence of one or more bits that represent at least a portion of the signal and a confidence level corresponding to the decision are generated.
1 . A digital receiver comprising:
a first component to receive a signal; and
a second component to:
generate a first vector of a first sequence of a portion of symbols of the signal;
generate a second vector of a second sequence of the portion of symbols; and
generate, based at least in part on the first vector and the second vector, a decision comprising a sequence of one or more bits that represent a first symbol of the portion of symbols of the signal and a confidence level corresponding to the decision.
2 . The digital receiver of claim 1 , wherein the second sequence comprises a flipped version of the first sequence.
3 . The digital receiver of claim 1 , wherein the second component further comprises:
a first decoder to generate a first set of state probabilities corresponding to the first vector; and
a second decoder to generate a second set of state probabilities corresponding to the second vector.
4 . The digital receiver of claim 3 , the second component further to calculate a state probabilities vector based on the first set of state probabilities and the second set of state probabilities.
5 . The digital receiver of claim 4 , wherein the second component further comprises a third decoder to generate, based on the state probabilities vector, a set of symbol probabilities corresponding to the portion of symbols, and wherein the decision is generated based on the state probabilities vector.
6 . The digital receiver of claim 1 , wherein the second component executes a Viterbi algorithm comprising a set of states.
7 . The digital receiver of claim 1 , wherein the decision further comprises an additional sequence of one or more bits that represent a second symbol of the portion of symbols of the signal.
8 . The digital receiver of claim 1 , wherein the portion of the symbols comprises a first subset of symbols of a first input block.
9 . The digital receiver of claim 8 , wherein the portion of the symbols further comprises a second subset of symbols of a first overlap block received prior to the first input block.
10 . The digital receiver of claim 9 , wherein the portion of the symbols further comprises a third subset of symbols of a second overlap block received after the first input block.
11 . A circuit to perform operations comprising:
generating a first vector of a first sequence of a portion of symbols of a signal;
generating a second vector of a second sequence of the portion of symbols; and
generating, based at least in part on the first vector and the second vector, a decision comprising a sequence of one or more bits that represent a first symbol of the portion of symbols of the signal and a confidence level corresponding to the decision.
12 . The circuit of claim 11 , wherein the second sequence comprises a flipped version of the first sequence.
13 . The circuit of claim 11 , the operations further comprising:
generating a first set of state probabilities corresponding to the first vector; and
generating a second set of state probabilities corresponding to the second vector.
14 . The circuit of claim 13 , the operations further comprising calculating a state probabilities vector based on the first set of state probabilities and the second set of state probabilities.
15 . The circuit of claim 14 , the operations further comprising generating, based on the state probabilities vector, a set of symbol probabilities corresponding to the portion of symbols.
16 . The circuit of claim 11 , the operations further comprising generating an equalized signal based on the signal, wherein the equalized signal is a partial response equalized signal.
17 . A method comprising:
generating a first vector of a first sequence of a portion of symbols of a signal;
generating a second vector of a second sequence of the portion of symbols; and
generating, based at least in part on the first vector and the second vector, a decision comprising a sequence of one or more bits that represent a first symbol of the portion of symbols of the signal and a confidence level corresponding to the decision.
18 . The method of claim 17 , wherein the second sequence comprises a flipped version of the first sequence.
19 . The method of claim 17 , further comprising:
generating a first set of state probabilities corresponding to the first vector; and
generating a second set of state probabilities corresponding to the second vector.
20 . The method of claim 19 , further comprising further comprising:
calculating a state probabilities vector based on the first set of state probabilities and the second set of state probabilities; and
generating, based on the state probabilities vector, a set of symbol probabilities corresponding to the portion of symbols.