发明名称 |
Pilot signal transmission in a multi-transmit antenna wireless communication system |
摘要 |
Pilot signals transmitted by different antennas in a wireless communication system using multiple transmit antennas are distinguished using different codes. In one embodiment, each of two antennas simultaneously transmit a time slot's worth of data while time division multiplexing a pilot signal with the data. The pilot signal from the first antenna is encoded with a first code such as a Walsh code and the pilot signal from the second antenna is encoded with a different code such as a different Walsh code. The different codes enable a receiver to distinguish the pilot signals when they are received to enable coherent detection of signals transmitted by both of the antennas.
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申请公布号 |
US6870825(B1) |
申请公布日期 |
2005.03.22 |
申请号 |
US20000655729 |
申请日期 |
2000.09.06 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
HUANG HOWARD C.;KOGIANTIS ACHILLES GEORGE;VISWANATHAN HARISH |
分类号 |
H04J3/00;H04B7/06;H04B7/26;H04J11/00;(IPC1-7):H04B7/06 |
主分类号 |
H04J3/00 |
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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