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Title:
BASE STATION FOR MOBILE COMMUNICATION SYSTEM
Document Type and Number:
Japanese Patent JP3177481
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To execute a larger number of simultaneous connecting processings while suppressing the rising of a cost and keeping a communication quality by providing a control means, etc., controlling a switch means and an interchanging means so as to connect the output terminal of each generating means to mutually different antennas.
SOLUTION: A control means 446 instructs to convert a received signal corresponding to a first-order antenna judged by receiving signals 431 and 432 from RF to IF according to the judging result of a judging part 445 at each receiving time slot. On the other hand the control part 446 based on the judging result controls switch setting obtained by combining a cross switch 460, antenna switching switches 495, 496 and circulators 492 and 493 to sort each of two systems (basing on the base band signal of TDMA processing parts 471 and 472 as a reference) using different carrier waves to optimum antennas among four antennas 401 to 404.


Inventors:
Yasunori Akatsuka
Masahiro Narita
Kyoichi Kamei
Application Number:
JP13732197A
Publication Date:
June 18, 2001
Filing Date:
May 27, 1997
Export Citation:
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Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H04J4/00; H04B7/02; H04B7/04; H04B7/26; (IPC1-7): H04B7/02; H04J4/00
Domestic Patent References:
JP1051365A
JP9215051A
JP10163936A
JP969808A
JP9289500A
JP98716A
Attorney, Agent or Firm:
Shiro Nakajima