Title:
RADIO COMMUNICATION APPARATUS, RADIO COMMUNICATION SYSTEM AND CHANNEL ESTIMATION METHOD
Document Type and Number:
Japanese Patent JP2016163148
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To separate a plurality of signals that collide with each other, while improving estimation accuracy of channel information.SOLUTION: Antenna elements A1, A2 and A3 receive reception signals each including a preceding signal and a following signal that collides with the preceding signal. A preceding signal channel estimation part 105 estimates channel information of the preceding signal. A pseudo signal generation part 107 generates a plurality of pseudo signals which come from a direction different from an arrival direction of the preceding signal and of which the arrival directions are different from each other, more than the number of antenna elements. A weight generation part 108 generates a plurality of weights corresponding to each of the plurality of generated pseudo signals and forming a null in the arrival direction of the preceding signal. A weight multiplication part 109 multiplies the reception signals that are received by the antenna elements A1, A2 and A3, by the plurality of generated weights, thereby obtaining weight multiplied signals. A following signal channel estimation part 111 estimates channel information of the following signal on the basis of the weight multiplied signals.SELECTED DRAWING: Figure 6
Inventors:
NISHIKAWA KENICHI
OZAKI KAZUYUKI
YOKOO IKU
FUJITA HIROSHI
URABE HIROO
OZAKI KAZUYUKI
YOKOO IKU
FUJITA HIROSHI
URABE HIROO
Application Number:
JP2015038933A
Publication Date:
September 05, 2016
Filing Date:
February 27, 2015
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
H04B7/10; H04W4/70; H04J99/00
Attorney, Agent or Firm:
Hiroaki Sakai