Digital precoding filter for a transmission filter

Details Digital precoding filter for a transmission filter Digital precoding filter for a transmission filter

2006-08-22

2006-08-22

Bocure, Tesfaldet (Department: 2631)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S285000

Reexamination Certificate

active

07095800

ABSTRACT:
Digital precoding filter for a transmission filter (6) for minimizing the chrest [sic] factor of the signal (y) output by the transmission filter (6), having a modulo adder (22) of the source data symbols which are received from a data symbol source (2) at a signal input (15) of the precoding filter (4), and added with fedback filtered transmission data symbols to transmission output data symbols (p) which are output to the downstream transmission filter (6) via a signal output (41) of the precoding filter (4); and a digital feedback filter (36) which filters the transmission output data symbols present at the signal output (41) and feeds them back to the modulo adder (22), and that [sic] a digital correction filter (39) is connected to the signal output (41), the filter coefficients of the digital correction filter (39) being set as a function of the normalized pulse response of the transmission filter (6) in the case of that sampling phase (τ) for which the output signal of the transmission filter (6) has a maximum value.

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patent: 2003/0035495 (2003-02-01), Laamanen et al.
patent: 3889810 (1994-07-01), None

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