公开(公告)号：US20210083779A1

公开(公告)日：2021-03-18

申请号：US16498138

申请日：2018-03-22

Applicant: NEC CORPORATION

Inventor： Manabu ARIKAWA ,  Yasunori FUTATSUGI ,  Toshiharu ITO

IPC: H04B10/61 ,  H04B7/08

Abstract: A signal processing device combines a plurality of received signals, and includes: a phase reference signal selection means for selecting a signal serving as a phase reference from among the plurality of received signals on the basis of the quality of the plurality of received signals; a relative phase calculation means for obtaining information about the relative phases of the plurality of received signals before the combining; a phase compensation means for performing relative phase compensation on each of the plurality of received signals on the basis of the relative phases; and a phase correction means for calculating a phase correction amount based on the relative phase information and performing phase correction on the received signals, wherein when switching occurs in the selected phase reference signal, the phase correction amount is changed by as much as the relative phase difference between the phase reference signals before and after the switching.

公开(公告)号：US20170163457A1

公开(公告)日：2017-06-08

申请号：US15321624

申请日：2015-02-24

Applicant: NEC Corporation

Inventor： Yasunori FUTATSUGI ,  Naoto ISHII

IPC: H04L27/26 ,  H04B1/16

CPC classification number: H04L27/2607 ,  H04B1/16 ,  H04L5/0007 ,  H04L25/0307 ,  H04L27/2665 ,  H04L27/2666

Abstract: The object of the present invention is to reduce the number of complex multiplications in an ICI reduction processing and to reduce the influence of characteristic degradation due to a quantization bit limitation of a digital signal processing. A receiver includes an extended CP addition unit (102) that receives radio signals through a plurality of paths and compensates for a symbol lost within a Fourier transform window to received signals received through the plurality of paths; and FFTs (104-1 and 104-2) each of which performs, in a range of the Fourier transform window, Fourier transform on the received signal with a lost symbol added.