发明名称 |
Hybrid radio architecture for repeaters using RF cancellation reference |
摘要 |
A wireless repeater includes a receiver circuit implemented as an intermediate frequency (IF) subsampling receiver and a transmitter circuit implemented as a direct conversion (zero-IF) transmitter. The repeater further includes a reference receiver implemented as an IF subsampling receiver to sample a portion of the transmit signal prior to over-the-air transmission for use as the reference signal for channel estimation. Highly accurate channel estimation is obtained by using the reference signal from the reference receiver as the reference signal accounts for distortions in the transmitter circuit of the repeater. The repeater may include an echo canceller to cancel an estimated feedback amount from an input signal based on the channel estimation. |
申请公布号 |
US8630211(B2) |
申请公布日期 |
2014.01.14 |
申请号 |
US20100827669 |
申请日期 |
2010.06.30 |
申请人 |
GAINEY KENNETH M.;PROCTOR, JR. JAMES ARTHUR;GORE DHANANJAY ASHOK;QUALCOMM INCORPORATED |
发明人 |
GAINEY KENNETH M.;PROCTOR, JR. JAMES ARTHUR;GORE DHANANJAY ASHOK |
分类号 |
H04B7/14;H04B3/20;H04B3/36;H04B7/165;H04B7/185;H04J3/08 |
主分类号 |
H04B7/14 |
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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