发明名称 |
Radio relay apparatus and method |
摘要 |
<p>A disclosed radio relay apparatus 20 receives signals from a transmitter 10 via multiple receive antennas 21 and transmits relay signals derived from the received signals to a receiver 30 via multiple transmit antennas 22. The apparatus includes a channel estimation unit 26 configured to estimate a forward channel matrix H 1 representing radio channel characteristics between the transmitter 10 and the radio relay apparatus 20 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 251 configured to derive a cancelling matrix C through iterative operations using the forward channel matrix H 1 , the loop channel matrix G and a backward channel matrix H 2 representing radio channel characteristics between the radio relay apparatus 20 and the receiver 30, and a feedback compensation unit 23 configured to subtract a signal weighted in accordance with the cancelling matrix C in a feedback path from a relay signal in a main signal path to adjust the relay signal.</p> |
申请公布号 |
EP2161853(B1) |
申请公布日期 |
2014.04.02 |
申请号 |
EP20090252127 |
申请日期 |
2009.09.03 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
SANGIAMWONG, JATURONG;ASAI, TAKAHIRO |
分类号 |
H04B7/15;H04B7/04;H04B7/06;H04B7/155;H04B7/26 |
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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