Method and apparatus for determining a calibration signal
First Claim
1. A method comprising:
- capturing a single-bit response (SBR) associated with a signaling system;
constructing an idealized inter-symbol-interference-free (ISI-free) SBR for the signaling system which is substantially free of inter-symbol-interference (ISI);
calculating an ISI-residual from the captured SBR and the idealized ISI-free SBR;
constructing a calibration bit pattern for the signaling system that is based substantially on the ISI-residual; and
using the calibration bit pattern to calibrate an aspect of the signaling system.
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Abstract
Embodiments of a system for determining and optimizing the performance a signaling system are described. During operation, the system captures or measures a single-bit response (SBR) for the signaling system. Next, the system constructs an idealized inter-symbol-interference-free (ISI-free) SBR for the signaling system which is substantially free of inter-symbol-interference (ISI). The system then calculates an ISI-residual from the captured SBR and the idealized ISI-free SBR. Next, the system constructs a calibration bit pattern for the signaling system that is based substantially on the ISI-residual. Finally, the system uses the calibration bit pattern to calibrate, optimize and determine an aspect of the performance of the signaling system.
6 Citations
36 Claims
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1. A method comprising:
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capturing a single-bit response (SBR) associated with a signaling system; constructing an idealized inter-symbol-interference-free (ISI-free) SBR for the signaling system which is substantially free of inter-symbol-interference (ISI); calculating an ISI-residual from the captured SBR and the idealized ISI-free SBR; constructing a calibration bit pattern for the signaling system that is based substantially on the ISI-residual; and using the calibration bit pattern to calibrate an aspect of the signaling system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for calibrating a signaling system, comprising:
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determining channel characteristics of the signaling system including capturing a single-bit response (SBR) for the signaling system; constructing an idealized inter-symbol-interference-free (ISI-free) SBR for the signaling system which is substantially free of inter-symbol-interference (ISI); calculating an ISI-residual from the captured SBR and the idealized ISI-free SBR constructing a calibration bit pattern for the signaling system that is based substantially on the ISI-residual; and using the calibration bit pattern to calibrate an aspect of the signaling system. - View Dependent Claims (18)
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19. An apparatus that determines the performance of a signaling system, comprising:
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a measuring mechanism configured to capture a single-bit response (SBR) associated with the signaling system; a computation mechanism configured to, construct an idealized inter-symbol-interference-free (ISI-free) SBR for the signaling system which is substantially free of inter-symbol-interference (ISI), calculate an ISI-residual from the captured SBR and the idealized ISI-free SBR, and construct a calibration bit pattern for the signaling system that is based substantially on the ISI-residual; and a testing mechanism to use the calibration bit pattern to determine an aspect of the performance of the signaling system. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36)
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35. An apparatus that calibrates a signaling system, comprising:
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a measuring mechanism to determine channel characteristics of the signaling system and to capture a single-bit response (SBR) for the signaling system; a bit-pattern generation mechanism to construct an idealized inter-symbol-interference-free (ISI-free) SBR for the signaling system which is substantially free of inter-symbol-interference (ISI), calculate an ISI-residual from the captured SBR and the idealized ISI-free SBR, construct a calibration bit pattern for the signaling system that is based substantially in the ISI-residual; and a calibration mechanism to use the calibration bit pattern to calibrate an aspect of the signaling system.
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Specification