Systems and methods for computing a relative path delay between multiple transmission sources
First Claim
1. A method comprising:
- receiving, at a device, a first signal transmitted from a first source and a second signal transmitted from a second source;
determining which one of the first source and the second source is closer to the device based on a relative path delay measurement, wherein the relative path delay measurement is computed based on at least one of a channel estimate of the first source and a differential of the first signal transmitted from the first source; and
selecting the corresponding signal from the first or the second source based on the determination of which one of the first source and the second source is closer to the device.
4 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods are provided for computing a relative path delay between multiple transmitting source to select a source that is closest to a receiving device. Preamble sequences unique to each source are received by a receiving device. The receiving devices determines based on a channel estimation or differential algorithm which transmitting source is closer to the receiving device. The channel estimation algorithm computes the path delay based on a channel estimation correlation at different preamble sequence indices. The differential algorithm computes the path delay based on a correlation between the received and transmitted preamble sequences at different preamble sequence indices. The receiving device selects the closer of the multiple sources to be the source from which to extract data.
15 Citations
54 Claims
-
1. A method comprising:
-
receiving, at a device, a first signal transmitted from a first source and a second signal transmitted from a second source; determining which one of the first source and the second source is closer to the device based on a relative path delay measurement, wherein the relative path delay measurement is computed based on at least one of a channel estimate of the first source and a differential of the first signal transmitted from the first source; and selecting the corresponding signal from the first or the second source based on the determination of which one of the first source and the second source is closer to the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A device comprising:
-
a receiver that receives a first signal transmitted from a first source and a second signal transmitted from a second source; control circuitry that; determines which one of the first source and the second source is closer to the device based on a relative path delay measurement, wherein the relative path delay measurement is computed based on at least one of a channel estimate of the first source and a differential of the first signal transmitted from the first source; and selects the corresponding signal from the first or the second source based on the determination of which one of the first source and the second source is closer to the device. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
-
-
37. A device comprising:
-
means for receiving a first signal transmitted from a first source means and a second signal transmitted from a second source means; means for determining which one of the first source and the second source means is closer to the device means based on a relative path delay measurement, wherein the relative path delay measurement is computed based on at least one of a channel estimate of the first source means and a differential of the first signal transmitted from the first source means; and means for selecting the corresponding signal from the first or the second source means based on the determination of which one of the first source and the second source means is closer to the device means. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
-
Specification