Impulse noise management

• US 8,594,162 B2
• Filed: 06/11/2013
• Issued: 11/26/2013
• Est. Priority Date: 03/03/2004
• Status: Active Grant

• Current Assignee: TQ Delta LLC (Techquity Capital Management, LLC)
• Original Assignee: TQ Delta LLC (Techquity Capital Management, LLC)
• Inventors: Tzannes, Marcos C.
• Primary Examiner(s): Corrielus, Jean B
• Application Number:
  US13/914,852
• Publication Number:
  US 20130272355A1
• Time in Patent Office: 168 Days
• Field of Search: 375/219, 375/224, 375/285, 375/350, 375/774, 375/786
• US Class Current: 375/219
• CPC Class Codes: H04B 15/00 Suppression or limitation of noise or interference by means associated with receiver H04B1/10
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0015 characterised by the adaptation strategy
• CPC Class Codes: H04L 1/0023 characterised by the signalling
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 1/0075 Transmission of coding parameters to receiver H04L1/0023 takes precedence
• CPC Class Codes: H04L 1/20 using signal quality detector
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling

Abstract

Evaluation of the impact of impulse noise on a communication system can be utilized to determine how the system should be configured to adapt to impulse noise events. Moreover, the system allows for information regarding impulse noise events, such as length of the event, repetition period of the event and timing of the event, to be collected and forwarded to a destination. The adaptation can be performed during one or more of Showtime and initialization, and can be initiated and determined at either one or more of a transmitter and a receiver.

Claims

1. A method, in a transceiver, comprising:

transmitting using a first interleaver parameter value;

transmitting a flag signal; and

changing to transmitting using a second interleaver parameter value that is different than the first interleaver parameter value,

wherein the second interleaver parameter value is used for transmission on a pre-defined forward error correction codeword boundary following transmission of the flag signal.

2. The method of claim 1, wherein the flag signal is an inverted sync symbol.

3. The method of claim 1, wherein the change in interleaver value does not cause bit errors or service interruption.

4. The method of claim 1, wherein the change in interleaver value is associated with at least one of an impulse noise protection value, a data rate and a latency value.

5. The method of claim 1, wherein the change in interleaver value is associated with a service provider configuration.

6. The method of claim 1, further comprising transmitting the flag signal on a telephone line that experiences impulse noise from external sources including one or more of AM radio, HAM radio and AC power lines.

7. The method of claim 1, wherein the transceiver is located in a linecard that includes a management interface that is usable by an operator or service provider to configure a service.

8. A device comprising:

an interleaver configured to interleave a plurality of bits; and

a transmitter portion coupled to the interleaver and configured to;

transmit using a first interleaver parameter value;

transmit a flag signal; and

change to transmitting using a second interleaver parameter value that is different than the first interleaver parameter value,

wherein the second interleaver parameter value is used for transmission on a pre-defined forward error correction codeword boundary following transmission of the flag signal.

9. The device of claim 8, wherein the flag signal is an inverted sync symbol.

10. The device of claim 8, wherein the change in interleaver value does not cause bit errors or service interruption.

11. The device of claim 8, wherein the change in interleaver value is associated with at least one of an impulse noise protection value, a data rate and a latency value.

12. The device of claim 8, wherein the change in interleaver value is associated with a service provider configuration.

13. The device of claim 8, wherein the transmitter is further configured to transmit the flag signal on a telephone line that experiences impulse noise from external sources including one or more of AM radio, HAM radio and AC power lines.

14. The device of claim 8, wherein the transmitter is located in a linecard that includes a management interface that is usable by an operator or service provider to configure a service.

15. The device of claim 8, wherein the transmitter is located in a Customer Premises Equipment (CPE) that includes a management interface that is usable by an operator, a service provider or service user.

16. The device of claim 8, wherein the transmitter includes at least one digital signal processor.

17. The device of claim 8, wherein the transmitter includes at least one ASIC (Application-Specific Integrated Circuit).