Decision feedback equalizer

Details Decision feedback equalizer Decision feedback equalizer

1993-08-05

1995-03-28

Chin, Stephen

Pulse or digital communications

Equalizers

375232, 36472416, 3647242, H03H 730, H03H 740, H03K 5159

Patent

active

054024455

ABSTRACT:
A decision feedback equalizer capable of coping with a high transmission rate and operable at a rate which is not effected by the number of taps. A first and a second shift register are respectively connected between a first and a second adder and between the second and a third adder. The output of a decision unit associated with the last tap is delayed one bit by a third shift register and then applied to multipliers at the same time. The multipliers, each being associated with respective tap, multiply their inputs by a first to a third tap coefficient, respectively. The resulting outputs of the multipliers are applied to the associated adders. The adders each has only to perform a single addition within a period of time corresponding to one bit.

REFERENCES:
patent: 3875515 (1975-04-01), Stuart et al.
patent: 4583234 (1986-04-01), Ramadan
patent: 5031133 (1991-07-01), Susaki
patent: 5224123 (1993-06-01), Iga et al.
patent: 5295157 (1994-03-01), Suzuki et al.

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