Patent attributes
In a receiver, there is a precursor iterative canceller (“PIC”) having first and second paths. A postcursor decision block is coupled to the PIC to provide a decision signal thereto. The PIC includes: comparators for receiving an input signal and corresponding threshold inputs for precursor ISI speculation; and select circuits for selecting a first speculative input for the first path and a second speculative input for the second path, respectively associated with a negative precursor contribution and a positive precursor contribution. The first path and the second path in combination include at least a first stage and a second stage for processing the first speculative input and the second speculative input. The decision signal is provided to the first stage and to the select circuits. The select circuits are coupled to receive the decision signal for selection of the first speculative input and the second speculative input.
