发明名称 |
Closed-loop mimo systems and methods |
摘要 |
<p>Methods, devices and systems are provided for transmitting and receiving MIMO signals. Transmitting of the MIMO signals involves pre-coding each of at least two data symbols using a respective pre-coding codeword to preclude a corresponding plurality of pre-coded data symbols. A respective signal is transmitted from each of a plurality of antennas, the respective signal including one of the pre-coded signals and at least one pilot for use in channel estimation. The signals collectively further include at least one beacon pilot vector consisting of a respective beacon pilot per antenna, the beacon pilot vector containing contents known to a receiver for use by the receiver in determining the codeword used to pre-code the at least one data signal. Receiving of the MIMO signals involves receiving a MIMO signal containing data symbols pre-coded with a codeword. The MIMO signal includes pilots, and including at least one beacon pilot vector containing contents known to a receiver/ each beacon pilot vector containing one symbol from each transmit antenna. Processing is performed on the at least one beacon pilot vector to determine which codeword was used to pre-code the data symbols.</p> |
申请公布号 |
EP2854302(A1) |
申请公布日期 |
2015.04.01 |
申请号 |
EP20140187133 |
申请日期 |
2007.03.19 |
申请人 |
APPLE INC. |
发明人 |
JIA, MING;MA, JIANGLEI;TONG, WEN;ZHU, PEIYING |
分类号 |
H04B7/04;H04B7/005;H04B7/208 |
主分类号 |
H04B7/04 |
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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