Method and apparatus for communication channel identification an

Details Method and apparatus for communication channel identification an Method and apparatus for communication channel identification an

1990-10-09

1991-09-10

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358139, 358167, 358905, 375 13, 375 19, 455 65, 455 67, H04N 708

Patent

active

050478591

ABSTRACT:
A test signal is transmitted over a communication channel and the signal is received by a receiver. The temporal evolution of the test signal is represented in a matrix and the inverse of the test signal evolution matrix is stored in the receiver. Samples of the received signal and the test signal evolution matrix inverse are used to compute the channel impulse response, and the values of the channel impulse response set signal restoration filter coefficient values. The received signal is then restored by filtering.

REFERENCES:
patent: 4864403 (1989-09-01), Chao
patent: 4912557 (1990-03-01), Faroudja
patent: 4953026 (1990-08-01), Kobayashi
patent: 4980767 (1990-12-01), Chao

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