发明名称 |
Forward link transmission mode for CDMA cellular communications system using steerable and distributed antennas |
摘要 |
A DS-CDMA cellular system is provided that employs two forward link transmission modes in parallel. A conventional transmission mode broadcasts a pilot channel that can be used by a conventional mobile station to estimate and detect a dedicated traffic channel. The second transmission mode transmits (via a sectorized or narrow lobe antenna system) all information required by a new generation mobile station to estimate and detect a traffic channel dedicated to that mobile station. Consequently, DS-CDMA system operators can introduce the use of adaptive array antenna systems or distributed antenna systems with new generation mobile stations, without terminating the use of the conventional mobile stations.
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申请公布号 |
US5953325(A) |
申请公布日期 |
1999.09.14 |
申请号 |
US19970778358 |
申请日期 |
1997.01.02 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
WILLARS, PER |
分类号 |
H04B1/04;H04B7/06;H04B7/10;H04B7/26;H04W16/28;(IPC1-7):H04Q1/00 |
主分类号 |
H04B1/04 |
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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