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1. 发明专利

JPWO2005025079A1 マルチキャリア信号処理装置有权
公开(公告)号：JPWO2005025079A1
公开(公告)日：2007-11-08
申请号：JP2005513620
申请日：2004-08-24
申请人：株式会社日立国際電気
发明人：渡邊　淳 , 淳渡邊 , 宮谷　徹彦 , 徹彦宮谷 , 誠若松 , 誠若松 , 貴史岡田 , 貴史岡田
IPC分类号： H04B1/04 , H04J1/05 , H04L25/03 , H04L27/26
CPC分类号： H04L27/2626 , H04L25/03828
摘要：本発明にかかるマルチキャリア信号処理装置は、アナログ処理ブロック14(アナログ回路素子)の周波数特性を補償するよう設定されたフィルタ係数に基づいて、生成されたマルチキャリア信号に対して補正処理を施す。より好ましくは、アナログ回路素子の温度を測定する温度測定部248をさらに設け、FIRフィルタ120は、アナログ回路素子の温度に応じたフィルタ係数に基づいて補正処理を行う。これにより、アナログ回路素子の温度依存性の影響を緩和することができる。

2. 发明专利

JP4315563B2 Delay profile generating circuit and cdma receiver 有权
公开(公告)号：JP4315563B2
公开(公告)日：2009-08-19
申请号：JP2000069790
申请日：2000-03-14
申请人：株式会社日立国際電気
发明人：久嗣川井 , 誠若松
IPC分类号： H04B1/707 , H04B1/7113
摘要： PROBLEM TO BE SOLVED: To provide a delay profile generating circuit whose circuit scale is made small and a CDMA receiver that can be downsized by eliminating the need for delay elements in order to solve a problem that a conventional circuit increases the circuit scale because it employs a delay elements. SOLUTION: A correlation arithmetic section (MF) 1 conducts a correlation arithmetic operation between a spread code of a received base band signal and a different spread code, a power arithmetic section (POW) 2 calculates an output level of the section 1, a selector selectively outputs data not delayed or data to be delayed by each symbol number, and an averaging section 8 averages each of the data and data having already averaged relating to data stored in a storage section 9 in the delay profile generating circuit and the CDMA receiver.

3. 发明专利

JP4383806B2 Optical digital transmission equipment 有权
标题翻译：空值
公开(公告)号：JP4383806B2
公开(公告)日：2009-12-16
申请号：JP2003306412
申请日：2003-08-29
申请人：株式会社日立国際電気
发明人：徹彦宮谷 , 久嗣川井 , 誠若松
IPC分类号： H04B10/07 , H04B10/077 , H04B10/079 , H04B10/524 , H04B10/556 , H04B17/00 , H04L29/14

4. 发明专利

JP3835724B2 Synchronization method and a synchronization circuit 有权
公开(公告)号：JP3835724B2
公开(公告)日：2006-10-18
申请号：JP4494999
申请日：1999-02-23
申请人：株式会社日立国際電気
发明人：市郎今泉 , 孝也星名 , 誠若松
IPC分类号： H04B7/26 , H04B1/7083 , H04B7/08 , H04J13/00 , H04W36/18
摘要： PROBLEM TO BE SOLVED: To suppress increase of a circuit scale by temporality storing the signal of a base station to which destination of communication is switched and allowing a radio means and a correlation obtaining means at any branch to operate and establish synchronization with the base station at the destination of switched communication by a control means in a period in which these means are not normally operated. SOLUTION: A synchronizing circuit is provided with a memory 15 which partially holds a reception signal at the time of diversity hand-over(DHO), and a control part 16 which controls the memory 15 or the like. Then, searcher 9, a profile part 11, and a sliding correlator 13 or the like are allowed to perform synchronization with the destination of DHO in a period in which a matched filter which performs an intermittent operation is not operating. Thus, it is not necessary to add any hardware such as a searcher, sliding correlator, or profile exclusively performing synchronization with the base station at the destination of DHO. Moreover, two branch diversity with the origin of DHO are continued, and hence synchronization can be performed without any hit of the communication with the destination of DHO.

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