Receiver having integrated spectral analysis capability

• US 10,103,957 B2
• Filed: 03/24/2014
• Issued: 10/16/2018
• Est. Priority Date: 06/08/2001
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Inventors: Min, Jonathan S., Lu, Fang, Currivan, Bruce J., Eddy, Kevin
• Primary Examiner(s): Skripnikov, Alex
• Application Number:
  US14/223,509
• Publication Number:
  US 20140286183A1
• Time in Patent Office: 1,667 Days
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 1/203 Details of error rate determination, e.g. BER, FER or WER
• CPC Class Codes: H04L 1/206 for modulated signals
• CPC Class Codes: H04L 25/08 Modifications for reducing interference; Modifications for reducing effects due to line faults ; Receiver end arrangements for detecting or overcoming line faults
• CPC Class Codes: H04L 43/0823 Errors, e.g. transmission errors

Abstract

A method of managing traffic in a communications channel includes the steps of receiving a subscriber ID corresponding to a subscriber, performing a spectral analysis on a signal received from the subscriber within a time interval identified by the subscriber ID, and adjusting transmission characteristics of the subscriber based on the spectral analysis.

Claims

1. An apparatus for performing a spectral analysis of a communication signal, comprising:

a tuner module, implemented on a chip, configured to provide a plurality of information sequences in parallel based upon the communication signal, each of the plurality of information sequences representing different spectral characteristics of the communication signal, the different spectral characteristics of the communication signal comprising;

a wideband spectral characteristic corresponding to a frequency spectrum of the communication signal,

a quarter band spectral characteristic corresponding to one fourth of the frequency spectrum of the communication signal, and

a half band spectral characteristic corresponding to one half of the frequency spectrum of the communication signal;

a selector, implemented on the chip, configured to select a single information sequence from among the plurality of information sequences, and

a processor, implemented on the chip, configured to perform the spectral analysis of only the single information sequence.

2. The apparatus of claim 1, wherein the spectral analysis comprises:

a Fast Fourier Transform (FFT).

3. The apparatus of claim 1, wherein the processor is further configured to time stamp a spectral measurement which results from the spectral analysis.

4. The apparatus of claim 1, wherein the spectral analysis comprises at least one of:

a spectral shape of the communication signal;

a presence of an interfering signal within the communication signal;

a level and shape of a background noise floor for the communication signal;

or

a presence of a partial spectral null in the communication signal.

5. The apparatus of claim 1, wherein the processor is further configured to perform the spectral analysis when an input pin of the processor is triggered.

6. The apparatus of claim 1, wherein the processor is further configured to perform the spectral analysis when a parameter associated with the communication signal matches a pre-programmed number.

7. An apparatus for providing a spectral analysis of a communication signal, comprising:

a tuner module, implemented on a chip, configured to provide a plurality of information sequences in parallel based on the communication signal, each of the plurality of information sequences representing different spectral characteristics of the communication signal, the different spectral characteristics of the communication signal comprising;

a wideband spectral characteristic corresponding to a frequency spectrum of the communication signal,

a quarter band spectral characteristic corresponding to one fourth of the frequency spectrum of the communication signal, and

a half band spectral characteristic corresponding to one half of the frequency spectrum of the communication signal;

a processor, implemented on the chip, comprising;

an input interface configured to receive a single information sequence selected from among the plurality of information sequences and a parameter, the parameter determining a property of the spectral analysis; and

a calculation module configured to perform the spectral analysis only on the single information sequence in accordance with the property.

8. The apparatus of claim 7, wherein the calculation module is further configured to perform the spectral analysis in accordance with a windowing technique or an averaging technique based upon the parameter.

9. The apparatus of claim 7, wherein the calculation module is further configured to perform the spectral analysis when an input pin of the processor is triggered.

10. The apparatus of claim 7, wherein the calculation module is further configured to perform the spectral analysis when a second parameter associated with the communication signal matches a pre-programmed number.

11. The apparatus of claim 7, wherein the calculation module is further configured to time stamp a spectral measurement which results from the spectral analysis.

12. The apparatus of claim 7, wherein the spectral analysis indicates at least one of:

a spectral shape of the communication signal;

a presence of an interfering signal within the communication signal;

a level and shape of a background noise floor for the communication signal;

or

a presence of a partial spectral null in the communication signal.

13. The apparatus of claim 7, wherein the calculation module is further configured to perform the spectral analysis on a selected frequency range of the single information sequence to provide the spectral measurement arranged in a plurality of bins, each bin from among the plurality of bins corresponding to a respective frequency range of the communication signal.

14. A method for providing a spectral analysis of a communication signal, the method comprising:

providing, by a receiver implemented on a chip, a plurality of information sequences in parallel based upon the communication signal, each of the plurality of information sequences representing different spectral characteristics of the communication signal, the different spectral characteristics of the communication signal comprising;

a wideband spectral characteristic corresponding to a frequency spectrum of the communication signal,

a quarter band spectral characteristic corresponding to one fourth of the frequency spectrum of the communication signal, and

a half band spectral characteristic corresponding to one half of the frequency spectrum of the communication signal;

receiving a parameter and a command;

selecting, by a processor implemented on the chip, a single information sequence from among the plurality of information sequences; and

performing, by the processor, the spectral analysis only on the single information sequence based on the parameter and in response to the command.

15. The method of claim 14, wherein the performing comprises:

performing a Fast Fourier Transform (FFT) on the single information sequence.

16. The method of claim 14, further comprising:

marking a spectral measurement which results from the spectral analysis with a time stamp.

17. The method of claim 14, wherein the spectral analysis comprises at least one of:

a spectral shape of the communication signal;

a presence of an interfering signal within the communication signal;

a level and shape of a background noise floor for the communication signal;

or

a presence of a partial spectral null in the communication signal.

18. The method of claim 14, wherein the performing comprises:

triggering the spectral analysis by using an input pin of the processor.

19. The method of claim 14, wherein the performing comprises:

triggering the spectral analysis when a second parameter associated with the communication signal matches a pre-programmed number.

20. The method of claim 14, wherein the performing comprises:

performing the spectral analysis on a selected frequency range of the single information sequence to provide the spectral measurement arranged in a plurality of bins, each bin from among the plurality of bins corresponding to a respective frequency range of the communication signal.