The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2007
Filed:
Sep. 26, 2003
Hiromasa Fujii, Yokosuka, JP;
Tetsushi Abe, Yokohama, JP;
Shigeru Tomisato, Okayama, JP;
Hirohito Suda, Yokosuka, JP;
Hiromasa Fujii, Yokosuka, JP;
Tetsushi Abe, Yokohama, JP;
Shigeru Tomisato, Okayama, JP;
Hirohito Suda, Yokosuka, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
In an adaptive equalizing apparatus for MIMO (Multi-Input Multi-Output) turbo reception, an interference component in a received signal is subtracted therefrom using a replica of an interference component in an interference canceling part, the subtracted output is filtered by a filter, to cancel the remaining interference component and to perform multi-path combining, and in a degree-of-interference-cancellation estimation part 41the degree of interference cancellation β(i) is set such that it is 0 for the iteration number i=1, 0.8+0.05 (i−1) for 5≧i≧2 and 1 for i≧6, and at the beginning of each iteration filter coefficients are calculated using β(i) and a channel estimation value in a filter coefficient calculating part 33and the filter coefficient thus calculated are set in the filter. An average value of soft decision symbol estimation values used in the interference canceling part may be used as β.