发明名称 |
Radio relay apparatus and method |
摘要 |
A disclosed radio relay apparatus receives signals from a transmitter via multiple receive antennas and transmits relay signals derived from the received signals to a receiver via multiple transmit antennas. The apparatus includes a channel estimation unit configured to estimate a forward channel matrix H1 representing radio channel characteristics between the transmitter and the radio relay apparatus and a loop channel matrix G representing interference occurring in the relay signals due to concurrently transmitting and receiving signals at the radio relay apparatus, a weight optimization unit configured to derive a canceling matrix C through iterative operations using the forward channel matrix H1, the loop channel matrix G and a backward channel matrix H2 representing radio channel characteristics between the radio relay apparatus and the receiver, and a feedback compensation unit configured to subtract a signal weighted in accordance with the canceling matrix C in a feedback path from a relay signal in a main signal path to adjust the relay signal.
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申请公布号 |
US8422942(B2) |
申请公布日期 |
2013.04.16 |
申请号 |
US20090551835 |
申请日期 |
2009.09.01 |
申请人 |
SANGIAMWONG JATURONG;ASAI TAKAHIRO;NTT DOCOMO, INC. |
发明人 |
SANGIAMWONG JATURONG;ASAI TAKAHIRO |
分类号 |
H04B7/15 |
主分类号 |
H04B7/15 |
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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