Patent ID: 11949473
Assignee: NEC CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wireless receiving apparatus comprising:
a receiving circuit configured to:
estimate a channel response vector based on a reception signal received via a plurality of antennas;
estimate a covariance matrix based on the reception signal and the channel response vector;
correct the covariance matrix by adding an offset value, to components of the covariance matrix including off-diagonal elements of the matrix; and
estimate a transmission signal by multiplying a weight based on the channel response vector and the corrected covariance matrix by the reception signal,

wherein the offset value (Roft) is calculated by:

Roft=rHr  (1)

wherein H denotes conjugate transpose or Hermitian transpose, and r denotes an assumed interference source reception signal vector and is expressed by:

r=βJ  (2)

wherein β denotes a level correction coefficient and J denotes a correction vector.