System for distributed beamforming for a communication system employing relay nodes
First Claim
1. An apparatus, comprising:
- at least one processor; and
at least one memory including computer program code, where the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to at least;
receive, with a first antenna, a first signal from a source node and a second signal from a destination node, wherein said second signal comprises one of a power-based feedback signal and a signal-to-noise based feedback signal from said destination node;
transmit, with a second antenna, at least a portion of said first signal with an antenna weighting factor; and
adjust said antenna weighting factor based on at least said second signal.
2 Assignments
0 Petitions
Accused Products
Abstract
In accordance with aspects of the present invention, a method, apparatus and system for learning antenna weighting factors in a communication system including relay nodes. In one embodiment, an apparatus (e.g., a relay node (325)) for use with a communication system includes a first antenna (330) configured to receive a first signal including a pilot training sequence from a source node (305) and a second signal including a power-based feedback signal or a signal-to-noise based feedback signal from a destination node (350). The apparatus also includes a second antenna (335) configured to transmit at least a portion of the first signal with an antenna weighting factor (e.g., a perturbed antenna weighting factor). The apparatus further includes an antenna weighting factor module (340) coupled to the first antenna (330) and configured to iteratively adjust the antenna weighting factor in response to the second signal.
-
Citations
20 Claims
-
1. An apparatus, comprising:
-
at least one processor; and at least one memory including computer program code, where the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to at least; receive, with a first antenna, a first signal from a source node and a second signal from a destination node, wherein said second signal comprises one of a power-based feedback signal and a signal-to-noise based feedback signal from said destination node; transmit, with a second antenna, at least a portion of said first signal with an antenna weighting factor; and adjust said antenna weighting factor based on at least said second signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method, comprising:
-
receiving, with a communication node, a first signal from a source node and a second signal from a destination node, wherein said second signal comprises one of a power-based feedback signal and a signal-to-noise based feedback signal from said destination node; transmitting, with the communication node, at least a portion of said first signal with an antenna weighting factor; and adjusting, with the communication node, said antenna weighting factor based on at least said second signal. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. An apparatus, comprising:
-
at least one processor; and at least one memory including computer program code, where the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to at least; receive a signal from one of a first and a second communication node; and transmit a feedback signal to at least one of said first and said second communication node to adjust an antenna weighting factor of an antenna thereof, wherein said feedback signal comprises one of a power-based feedback signal and a signal-to-noise based feedback signal. - View Dependent Claims (18, 19)
-
-
20. A communication system, comprising:
-
a source node configured to transmit a first signal including a pilot training sequence; a destination node configured to transmit a second signal; and a relay node, including; a first antenna coupled to a receiver configured to receive said first signal and said second signal, wherein said second signal comprises one of a power-based feedback signal and a signal-to-noise based feedback signal from said destination node, a second antenna coupled to a transmitter configured to transmit at least a portion of said first signal with an antenna weighting factor, and an antenna weighting factor module coupled to said first antenna and configured to adjust said antenna weighting factor based on at least said second signal.
-
Specification