Title:
MOBILE COMMUNICATION DEVICE
Document Type and Number:
Japanese Patent JP3589292
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a mobile communication device capable of ensuring excel lent communication quality by directing the beam directivity of an adaptive antenna to a moving object even in the mobile communication in which communi cation from the moving object which is generated intermittently such as packet communication.
SOLUTION: This light subscriber system is provided with an adaptive antenna having a plurality of antenna elements capable of radiating beams adaptive to a radio environment by controlling the weighting of the respective antenna elements, a position estimator for estimating the position of the traveling object, a beam synthesizer for synthesizing beams by weighting reception signals from the traveling object received by the plurality of antenna elements, and a weighting factor generator for correcting a weighting factor adaptive to a radio environment for applying an initial weight as a weight for forming null in an azimuth other than the traveling object based on the estimated position of the traveling object estimated by the position estimator. Thus, it is possible to shorten a time until the conversion.
Inventors:
Kan Nakamura
Application Number:
JP2000365037A
Publication Date:
November 17, 2004
Filing Date:
November 30, 2000
Export Citation:
Assignee:
NEC
International Classes:
H01Q3/26; H04B7/04; H04B7/06; H04B7/08; H04B7/10; H04B7/26; H04Q7/36; (IPC1-7): H04B7/26; H01Q3/26; H04B7/06; H04B7/08; H04B7/10
Domestic Patent References:
| JP11215049A | ||||
| JP7087011A | ||||
| JP8275687A | ||||
| JP9121378A | ||||
| JP11252614A | ||||
| JP11215049A | ||||
| JP7087011A | ||||
| JP8275687A |
Attorney, Agent or Firm:
Aperture Muneaki
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