发明授权
- 专利标题： Time division multiple access cellular communication system and method employing base station diversity transmission
- 专利标题（中）： 时分多址蜂窝通信系统及采用基站分集传输的方法
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申请号： US322963申请日： 1994-10-13
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公开(公告)号： US5574989A公开(公告)日： 1996-11-12
- 发明人: John Watson , Youngky Kim , Long Huynh , Michael Parr
- 申请人： John Watson , Youngky Kim , Long Huynh , Michael Parr
- 申请人地址： CA Los Angeles
- 专利权人： Hughes Electronics
- 当前专利权人： Hughes Electronics
- 当前专利权人地址： CA Los Angeles
- 主分类号： H04B7/06
- IPC分类号： H04B7/06
摘要：
A cellular base station (10) in a digital cellular system employs transmitting circuitry in which voice signals (15) are processed at a low frequency level (12) into two separate paths. A first of the low frequency signals is variably delayed (20), and the first and the other low frequency signals are upconverted to radio frequency level (16,22) for transmission over independent time-spaced transmission paths (26,28) to cellular receivers. A receiver downconverts and demodulates the radio frequency diversity signals, and then combines the demodulated diversity signals to generate an equalized combination diversity signal for receiver output processing.
公开/授权文献
- US4415735A 3-Formylmethyl-cephalosporins 公开/授权日：1983-11-15
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