Method and system for providing maximum likelihood detection with decision feedback interference cancellation

A system for providing maximum likelihood detection with decision feedback interference cancellation, comprising:

• a delay block operable to receive a filter output for a current symbol and to delay the filter output for the current symbol for a symbol duration to generate a delayed filter output;
• a first previous symbol interference (PSI) remover coupled to the delay block, the first PSI remover operable to receive the delayed filter output and to remove PSI from the delayed filter output to generate a delayed filter output with PSI removed;
• a first symbol estimator coupled to the first PSI remover, the first symbol estimator operable to receive the delayed filter output with PSI removed and to estimate the current symbol based on the delayed filter output with PSI removed;
• a second PSI remover coupled to the first symbol estimator, the second PSI remover operable to receive a filter output for a next symbol, to receive the estimation of the current symbol from the first symbol estimator, and to remove PSI from the filter output for the next symbol to generate a filter output with PSI removed;
• a second symbol estimator coupled to the second PSI remover, the second symbol estimator operable to receive the filter output with PSI removed and to estimate the next symbol based on the filter output with PSI removed;
• and
• a next symbol interference (NSI) remover coupled to the first PSI remover and to the second symbol estimator, the NSI remover operable to receive the delayed filter output with PSI removed, to receive the estimation of the next symbol from the second symbol estimator, and to remove NSI from the delayed filter output with PSI removed to generate a delayed filter output with PSI and NSI removed.