Method and apparatus for inter-path delay estimation
AssigneeJabil Inc.
InventorWalid Khairy Mohamed Ahmed
Life of this patent
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Abstract
Methods and systems for inter-path delay estimation. A method for inter-path delay estimation includes injecting, nearly simultaneously, a continuous wave tone at an input test point in a first communication path and at an input test point in a second communication path, combining output signals from the first communication path and the second communication path, measuring a magnitude of a combined output signal using an envelope detector, and adjusting a delay element in one of the first communication path and the second communication path until the magnitude of the combined output signal is maximized.
Claims20
A method for inter-path delay estimation, the method comprising:
- injecting, nearly simultaneously, a continuous wave tone at an input test point in a first communication path and at an input test point in a second communication path, wherein the input test point for the first communication path and the input test point for the second communication path are at inputs to respective delay elements in each of the first communication path and the second communication path;
- combining output signals from the first communication path and the second communication path;
- measuring a magnitude of a combined output signal using an envelope detector;
- and
- adjusting a delay element in one of the first communication path and the second communication path until the magnitude of the combined output signal is maximized.
A communication device, comprising:
- two communication paths, each of the two communication paths configured to receive a continuous wave tone at an input test point, wherein an input test point for one communication path of the two communication paths and an input test point for an other communication path of the two communication paths are at inputs to respective delay elements in the one communication path and the other communication path;
- a combiner configured to combine outputs from the two communication paths;
- an envelope detector configured to detect a magnitude of a combined output signal;
- and
- a controller configured to adjust a delay value of a variable delay in one of the two communication paths until the magnitude of the combined output signal is maximized.
A method for inter-path delay estimation, the method comprising:
- outputting a first signal from a first communication path based on injecting a continuous wave tone at a first test point, wherein the first test point is at an input to a delay element in the first communication path;
- outputting a second signal from a second communication path based on injecting the continuous wave tone at a second test point, wherein the second test point is at an input to a delay element in the second communication path;
- combining the first signal and the second signal into an output signal;
- measuring a magnitude of the output signal using an envelope detector;
- and
- adjusting a delay element in one of the first communication path and the second communication path until a maximum output signal is achieved.
Dependencies are inferred from the claim text.