An apparatus, method, computer readable medium, and system are provided to generate a symbol placement associated with a transmission scheme by transforming a retrieved set of equalization coefficients. Symbols included in the symbol placement may be analyzed and quantified in terms of their distance from a decision boundary. Symbols may be synthesized on an iterative basis in order to obtain visibility into the underlying performance of the transmission scheme over time. If equalization is unable to reduce a signal impairment below a threshold value within a predetermined amount of time, then a determination may be made that a non-linear distortion source is present in a network or communication system. Signals received from a plurality of user terminals may be compared with one another in order to determine a probable location or cause of the non-linear distortion.

Claims

19 · 3 independent · depth 3

19 granted claims

›1.independentA method comprising:ngenerating, by a first computing device, a first symbol placement associated with a transmission scheme and based on a set of pre…+6

›2.↳ 1The method of claim 1, further comprising:ngenerating a constellation pattern based on the first symbol placement and the updated first symbol placeme…d2+1

›4.↳ 1The method of claim 1, further comprising:ncalculating at least one of a modulation error ratio (MER) and an error vector based on the first symbol pl…d2

›5.↳ 1The method of claim 1, further comprising:nquantifying a distortion present in a communication channel in terms of at least one of amplitude over an o…d2

›6.↳ 1The method of claim 1, further comprising:ncalculating, by the first computing device and for at least one of a plurality of generated symbols include…d2

›7.↳ 1The method of claim 1, wherein the threshold indicative of likely demodulation error comprises a threshold distance to a decision boundary associated …d2

›8.independentA method comprising:ndetermining, by a computing device and while providing a user service, that a non-linear distortion source is present in a commun…+3

›12.independentA method comprising:ntransforming, by a computing device, a set of equalization coefficients into a symbol placement value associated with a transmiss…+7

›13.↳ 12The method of claim 12, further comprising:ntransforming the set of equalization coefficients into a plurality of symbol placement values associated w…d2

›14.↳ 12The method of claim 12, further comprising:ngenerating a symbol placement associated with the symbol placement value.d2

›15.↳ 12The method of claim 12, further comprising:ntransmitting, to a device based on the symbol placement value, a request to schedule an appointment or gui…d2

›16.↳ 12The method of claim 12, further comprising:ntransmitting, to a device based on the symbol placement value, a distance from the device to the likely so…d2

›17.↳ 12The method of claim 12, further comprising:ngenerating, by the computing device, a constellation pattern based on the symbol placement value.d2

›18.↳ 12The method of claim 12, wherein the transforming the set of equalization coefficients into the symbol placement value comprises calculating one or mor…d2

›19.↳ 12The method of claim 12, further comprising:nquantifying a distortion present in a communication channel associated with the symbol placement value in …d2

Classifications

6 codes

IPC · International Patent Classification

Section H — Electricity

H04L29/08
H04B3/46
H04L25/03
H04L12/26
H04L25/02
H04L29/06

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File wrapper

Pendency

2.4 y

862 days filing → grant

Office actions

non-final + final

Responses

3 RCE

Examiner

Khanh C Tran

art unit 2631 · TC 2600

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Citations: 67 back · 0 forward

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Priority chain

2 priority documents

Priority

5 Feb 2010

earliest claimed

›Priority documents — 2

Type	Document	Date
provisional	US 61301835	5 Feb 2010
related publication	US 20140241409 A1	28 Aug 2014

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