Nonlinear receiver, asymmetric decision feedback equalization circuit and method

An asymmetric decision feedback equalization circuit, at least comprising:

• a data input moduleto receive input data and outputting a differential signal of each data;
• k compensation modules respectively connected to an output end of the data input module, to obtain a compensation amplitude of a current data by compensating the current data based on the logic value of a prior data of the current data and an feedback coefficient corresponding to the prior data;
• a comparison module connected to an output end of the data input module, to compare the compensation amplitude of current data with a decision threshold, to determine a logic value of the current data;
• and
• k trigger modules in one-to-one correspondence with the compensation modules, sequentially connected in series to an output end of the comparison module to sequentially obtain a logic value of each prior data of the current data,
• wherein k is a positive integer.

An asymmetric decision feedback equalization circuit, at least comprising:

• a compensation module to respectively compensate an amplitude of a current data based on a combination of different feedback coefficients corresponding to a sequence of k prior data, and latch the compensation data as a prior data of a next current data;
• and
• a selection module connected to an output of the compensation module, to determine feedback coefficients corresponding to each prior data, thereby determining the amplitude of the current data after compensation;
• wherein k is a positive integer.