Monitor for a receiver having means for specifying regions within discrimination domains of a signal space
AssigneeNippon Electric Co., Ltd.
InventorYoshio Matsuo
Life of this patent
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Abstract
A monitor for a receiver specifies a predetermined region within each of a plurality of continuous discrimination domains of a signal space, with each domain including a true signal point representative of an original signal which the receiver may allowably receive. The monitor compares each of the regions to the actual signal points represented in the receiver input signal and produces a monitor output signal representative of the frequency at which the actual signal points of the received signal are outside of the predetermined regions.
Claims5
A monitor for a receiver reproducing an original signal from an input signal sent to said receiver through transmission facilities, said original signal being represented by a sequence of true signal points each contained in one of a plurality of contiguous discrimination domains specified in a signal space, said receiver including a detector responsive to said input signal for producing a detector output signal having electrical characteristics successively representing each actual signal point of said input signal in said signal space, said monitor comprising:
- first means for providing electrical characteristics specifying a predetermined region within each of the respective discrimination domains, each said region including the respective true signal point contained within the associated discrimination domain;
- and
- second means operatively coupled to said first means and to said detector output for measuring the frequency at which the electrical characteristics of each said actual signal point coincides with the electrical characteristics of any of said predetermined regions to produce a monitor output signal indicative of the frequency at which the actual signal points occur within said predetermined regions.
Dependencies are inferred from the claim text.