发明名称 |
LINEARIZATION OF INTERMODULATION BANDS FOR CONCURRENT DUAL-BAND POWER AMPLIFIERS |
摘要 |
Systems and methods are disclosed for digital predistortion for a concurrent multi-band transmitter that compensates for both in-band and out-of- band intermodulation products according to a memory polynomial based baseband model. In one embodiment, a concurrent multi-band transmitter includes a digital predistortion subsystem, power amplifier circuitry, and an adaptation subsystem. The digital predistortion subsystem includes multiple digital predistorters configured to process digital input signals for frequency bands of a concurrent multi-band signal to provide predistorted digital input signals each being for a different one of the frequency bands of the concurrent multi-band signal and one or more intermodulation distortion compensation signals each being for a different one of one or more intermodulation distortion frequency bands. The adaptation subsystem is configured to adaptively configure the plurality of digital predistorters according to a memory polynomial based digital baseband model of the digital predistorters. |
申请公布号 |
WO2014188294(A3) |
申请公布日期 |
2015.01.22 |
申请号 |
WO2014IB61161 |
申请日期 |
2014.05.02 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
LAPORTE, PIERRE-ANDRE;ROLLINS, MARK EDWARD;CAO, HAIYING |
分类号 |
H04B1/00;H03F1/32;H04B1/04;H04B1/62 |
主分类号 |
H04B1/00 |
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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