发明名称 |
Empfänger und Verfahren für den kohärenten Empfang mittels empfangener Pilotsymbole |
摘要 |
<p>The apparatus has a Transmission/reception amplifying unit (2) for the amplification of CDMA signals from and to a mobile station. A base band-spread transmission signal which is passed through the amplifying unit is then D-A converted to analogue by a radio unit (3) and then quadrature modulated, quasi-synchronously detecting a received signal which is then A-D converted to a digital signal. The system also has a base band signal processing unit (4), connected to the radio unit which subjects both the transmission and received signals to the base band signal processing, a transmission channel interface (6) which is connected to the base band signal processing unit which serves as an interface with an external line, and a control unit which controls radio circuits and their setting/resetting. Communication with an external line occurs using ATM cells. The communication with the mobile station by using CDMA signals is effected by mapping a series of logic channels on a series of physical channels. The band of the CDMA signals is spread with two short and long spread-series codes.</p> |
申请公布号 |
DE69827954(D1) |
申请公布日期 |
2005.01.05 |
申请号 |
DE1998627954 |
申请日期 |
1998.04.17 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
NAKAMURA, TAKEHIRO;HAGIWARA, JUNICHIRO;NAKANO, ETSUHIRO;OHNO, KOJI;ONOE, SEIZO;HIGASHI, AKIHIRO;TAMURA, MOTOSHI;NAKANO, MASATOMO;KAWAKAMI, HIROSHI;MORIKAWA, HIROKI |
分类号 |
H04B7/005;H04B7/26;H04J13/00;H04J13/10;H04J13/16;H04L12/801;H04L12/911;H04L12/951;H04W4/00;H04W16/24;H04W28/06;H04W36/08;H04W52/08;H04W52/12;H04W52/16;H04W52/24;H04W52/32;H04W52/40;H04W52/50;H04W52/56;H04W52/60;H04W72/04;H04W84/12;H04W88/08;H04W92/10;H04W92/12;(IPC1-7):H04B7/26;H04L12/28;H04B1/707 |
主分类号 |
H04B7/005 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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