发明名称 |
System and Method for Estimating a Transmit Channel Response and/or a Feedback Channel Response Using Frequency Shifting |
摘要 |
Systems and methods for identifying a transmission channel response and a feedback channel response from a plurality of composite system responses are disclosed. A plurality of shifted feedback signals are created by shifting a feedback signal frequency by a plurality of first offset values and/or by shifting a transmission signal frequency by a plurality of second offset values. The feedback signals are compared to an input signal to identify the transmission channel response and/or a feedback channel response. A control signal is generated for a pre-distortion circuit to modify the input signal by an inverse of the transmission channel response. The composite system response is measured at a plurality of operating frequencies and at the plurality of offset values. The measurements are stored in a matrix and singular value decomposition is applied to the matrix of measurements to calculate the transmission channel response and feedback channel response. |
申请公布号 |
US2011317786(A1) |
申请公布日期 |
2011.12.29 |
申请号 |
US20100823714 |
申请日期 |
2010.06.25 |
申请人 |
MUJICA FERNANDO A.;WICK CARSON A.;DING LEI;BORKAR MILIND;SPERLICH ROLAND;TEXAS INSTRUMENTS INC. |
发明人 |
MUJICA FERNANDO A.;WICK CARSON A.;DING LEI;BORKAR MILIND;SPERLICH ROLAND |
分类号 |
H04B15/00;H04B17/00 |
主分类号 |
H04B15/00 |
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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