发明名称 |
Nonlinear pre-distortion modulator and long loop control |
摘要 |
Method for predistortion compensation for nonlinear distortion produced by the non-linear power amplifier of the QAM signal at the transmitter side of the direct digital communication channel. The out-of-band signal power is monitored by the existent receiver at the receive side of the direct propagation channel. The nonlinear distortion compensation signal is generated at the receiver/demodulator side of the direct propagation channel and transmitted across the direct propagation channel to an input of a pre-distortion block at the transmitter/modulator side of the direct propagation channel. The nonlinear distortion compensation signal is used to adjust the set of parameters of the pre-distortion block in order to minimize the out-of-band power produced by the non-linear amplifier (NLA).
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申请公布号 |
US6785342(B1) |
申请公布日期 |
2004.08.31 |
申请号 |
US20000707419 |
申请日期 |
2000.11.06 |
申请人 |
WIDEBAND SEMICONDUCTORS, INC. |
发明人 |
ISAKSEN DAVID BRUCE;DANZER BYRON ESTEN |
分类号 |
H04L27/34;H04L27/38;(IPC1-7):H04L27/10 |
主分类号 |
H04L27/34 |
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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