×

Resolving co-channel interference between overlapping users using rank selection

  • US 8,824,272 B2
  • Filed: 10/09/2012
  • Issued: 09/02/2014
  • Est. Priority Date: 10/09/2012
  • Status: Active Grant
First Claim
Patent Images

1. A computer program embodied on a non-transitory computer-readable storage medium, the computer program configured to cause at least one processor to:

  • perform an eigendecomposition of a covariance matrix for a received signal, wherein columns of an eigendecomposition matrix produced by the eigendecomposition are eigenvectors; and

    for each of the k largest eigenvalues, where k is an integer representing a number of co-channel users and the k co-channel users are ordered from strongest to weakest signal strength,select an eigenvector in the eigendecompositionmatrix having a kth largest eigenvalue as a signal subspace for the kth user,select the remaining eigenvectors in the eigenvector matrix as a noise subspace, andcompute a carrier frequency offset based on the noise subspace for the kth user using a MUSIC algorithm.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×