Channel impulse response estimator for use in an adaptive maximu

Details Channel impulse response estimator for use in an adaptive maximu Channel impulse response estimator for use in an adaptive maximu

1992-08-24

1994-10-25

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375 13, 375 14, 3647242, 333 28R, H03D 100

Patent

active

053596285

ABSTRACT:
In a channel impulse response estimator (12), a local preamble generator (35) generates a local preamble signal identical with a transmission preamble signal in a received signal. A preamble detector (37) detects the transmission preamble signal in an estimated sequence signal to produce a preamble detection signal. Responsive to the preamble detection signal, a sequence selector (39) selects one of the local preamble signal and the estimated sequence signal as a selected sequence signal which is supplied to a re-modulator (14). Responsive to the preamble detection signal, a step-size generator (41) generates one of first and second step-size signals as a selected step-size signal which is supplied to a tap coefficient producer (26).

REFERENCES:
patent: 4613975 (1986-09-01), Aoyagi et al.
patent: 5164962 (1992-11-01), Nakai et al.
patent: 5175747 (1992-12-01), Murakami
patent: 5231648 (1993-07-01), Driedger et al.
Digital Communications, edited by Proakis, John G., New York, McGraw-Hill, 1983, pp. 410-412.

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