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:
Dec. 14, 2010
Filed:
Sep. 14, 2007
Liang Zhou, Kawasaki, JP;
Michiharu Nakamura, Kawasaki, JP;
Liang Zhou, Kawasaki, JP;
Michiharu Nakamura, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In a wireless communication apparatus of multi-input system, Fourier transform is used to estimate the frequency response of a received signal and further provide a converted impulse response of time domain, and a window function having a simple lowpass filter characteristic is used to separate the impulse response into channel impulse responses of the respective signals. The window function having the lowpass filter characteristic is relatively simple in arithmetic and receives less influence from the channel statistical characteristic, so that it can realize both a separation of multi-antenna channel impulse responses and a highly-precise channel estimation at the same time.