Method and apparatus for determining a receiver beam in a co-existence cognitive radio
AssigneeMassachusetts Institute of Technology
InventorRachel E. Learned
Life of this patent
Estimating the term…
Abstract
In some embodiments, a method for mitigating interference in a channel having multiple users can include: determining a starting angle based on a direction of a signal of interest (SOI); iteratively steering a beam away from the starting angle in opposite directions and calculating a grade of the beam; choosing the beam at a current angle as a receive beam based on the beam grade; receiving a signal using the receive beam; and decoding the SOI from one or more interfering signals using successive interference cancellation multi-user detection (SIC MUD) on the received signal.
Claims18
A method for mitigating interference in a channel having multiple users, the method comprising:
- determining a starting angle based on a direction of a signal of interest (SOI);
- iteratively steering a beam away from the starting angle in opposite directions and calculating a grade of the beam, whereby, at each iteration, the beam is steered away from the starting angle in a first direction by an offset angle, steered away from the starting angle in a second direction by the offset angle, and the offset angle is increased;
- choosing the beam at a current angle as a receive beam based on the beam grade;
- receiving a signal using the receive beam;
- and
- decoding the SOI from one or more interfering signals using successive interference cancellation multi-user detection (SIC MUD) on the received signal.
A method for mitigating interference in a channel having multiple users, the method comprising:
- determining a starting angle based on a direction of a signal of interest (SOI) by:
- estimating a direction of arrival (DOA) of the SOI,
- estimating a DOA of an interfering channel, and
- determining the starting angle as an angle halfway between the estimated DOA of the SOI and the estimating DOA of the interfering channel;
- iteratively steering a beam away from the starting angle in opposite directions and calculating a grade of the beam;
- choosing the beam at a current angle as a receive beam based on the beam grade;
- receiving a signal using the receive beam;
- and
- decoding the SOI from one or more interfering signals using successive interference cancellation multi-user detection (SIC MUD) on the received signal.
Dependencies are inferred from the claim text.