Method And System For A Combined Signal Detection For Physical Layer Communication Devices

• US 20100150285A1
• Filed: 08/05/2009
• Published: 06/17/2010
• Est. Priority Date: 11/10/2008
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Bui, Sang, Powell, Scott, Tazebay, Mehmet, Wang, Peiqing, Conway, Bruce
• Granted Patent: US 9,008,244 B2
• Time in Patent Office: Days
• US Class Current: 375/346
• CPC Class Codes: H04B 1/12 Neutralising, balancing, or compensation arrangements
• CPC Class Codes: H04B 1/7097 Interference-related aspects
• CPC Class Codes: H04B 3/23 using a replica of transmitted signal in the time domain, e.g. echo cancellers
• CPC Class Codes: H04B 3/32 Reducing cross-talk, e.g. by compensating

Abstract

Communication devices coupled via a communication link may comprise physical layer devices that may be operable to determine presence of a received signal and to mitigate noise in the signal prior to processing and/or validating the signal. Analog and/or digital signal processing may be utilized to process the signal and/or mitigate noise in the signal. Noise mitigation may comprise near-end crosstalk cancelling and/or echo cancelling and/or may utilize local transmit signal information. Subsequent to noise mitigation, samples of the noise reduced signal may be accumulated and/or an average signal strength and/or average signal power level may be determined. The average signal strength and/or average signal power level may be compared to one or more thresholds which may be configurable and/or programmable.

Claims

1. A method for communication, the method comprising:

performing by one or more physical layer devices in one or more communication devices that are coupled via a communication link;

determining presence of a signal received via said communication link; and

mitigating noise in said received signal prior to processing said signal.

2. The method according to claim 1, wherein said processing said signal comprises validating said signal.

3. The method according to claim 1, comprising processing said signal utilizing analog and/or digital signal processing.

4. The method according to claim 1, comprising mitigating said noise utilizing analog and/or digital signal processing.

5. The method according to claim 1, comprising mitigating said noise utilizing local transmit signal information.

6. The method according to claim 1, comprising mitigating said noise utilizing near-end crosstalk cancellers and/or echo cancellers.

7. The method according to claim 1, comprising accumulating samples of said signal subsequent to said mitigating said noise.

8. The method according to claim 1, comprising determining an average signal strength and/or average power level of said signal subsequent to said mitigating said noise.

9. The method according to claim 1, comprising comparing average signal strength and/or average power level of said signal to one or more thresholds subsequent to said mitigating said noise.

10. The method according to claim 9, comprising programming and/or configuring said one or more thresholds.

11. A system for communication, the system comprising:

one or more circuits for use in one or more communication devices that are coupled via a communication link, said one or more circuits in said one or more communication devices comprises one or more physical layer devices, wherein said one or more circuits are operable to;

determine presence of a signal received via said communication link; and

mitigate noise in said received signal prior to processing said signal.

12. The system according to claim 11, wherein said processing said signal comprises validating said signal.

13. The system according to claim 11, wherein said one or more circuits are operable to process said signal utilizing analog and/or digital signal processing.

14. The system according to claim 11, wherein said one or more circuits are operable to mitigate said noise utilizing analog and/or digital signal processing.

15. The system according to claim 11, wherein said one or more circuits are operable to mitigate said noise utilizing local transmit signal information.

16. The system according to claim 11, wherein said one or more circuits are operable to mitigate said noise utilizing near-end crosstalk cancellers and/or echo cancellers.

17. The system according to claim 11, wherein said one or more circuits are operable to accumulate samples of said signal subsequent to said mitigating said noise.

18. The system according to claim 11, wherein said one or more circuits are operable to determine an average signal strength and/or average power level of said signal subsequent to said mitigating said noise.

19. The system according to claim 11, wherein said one or more circuits are operable to compare average signal strength and/or average power level of said signal to one or more thresholds subsequent to said mitigating said noise.

20. The system according to claim 19, wherein said one or more circuits are operable to program and/or configure said one or more thresholds.