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Patent Searching and Data


Title:
符号分割多元接続システムおよび基地局
Document Type and Number:
Japanese Patent JP4338755
Kind Code:
B2
Abstract:
In a compressed mode, a spread spectrum communication device interleaves bit units across multiple frames using an interleaver, reduces the spreading factor using a framing/spreading unit, outputs the compressed mode frames at a predetermined compressed mode frame timing, and increases the average transmission power in the compressed mode at a radio frequency transmitter. Furthermore, a handover between different frequencies is carried out by establishing synchronization to another frequency carrier, based on a first search code and a second search code which have been detected, and moreover, a handover between different communication systems is carried out by establishing synchronization to a GSM, based on an FCCH and a SCH which have been detected.

Inventors:
矢野 安宏
村井 英志
Application Number:
JP2007297977A
Publication Date:
October 07, 2009
Filing Date:
November 16, 2007
Export Citation:
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Assignee:
三菱電機株式会社
International Classes:
H04W52/04; H04W52/44; H03M13/27; H04B1/707; H04B1/7073; H04B1/7083; H04B1/7087; H04B7/005; H04B7/216; H04B7/26; H04J13/00; H04J13/16; H04L1/00; H04L7/00; H04W36/00; H04W36/30; H04W36/36; H04W52/08; H04W52/26; H04W52/28; H04W52/36; H04W52/48; H04W52/56; H04W52/60; H04W76/02; H04B1/7075; H04W36/14; H04W52/00; H04W56/00
Domestic Patent References:
JP8223113A
Foreign References:
WO1996023369A1
WO1997040592A1
Attorney, Agent or Firm:
酒井 宏明