- 专利标题: Predistortion for hybrid digital/analog precoders
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申请号: US16146363申请日: 2018-09-28
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公开(公告)号: US10404334B2公开(公告)日: 2019-09-03
- 发明人: Ronen Shaked
- 申请人: Maxlinear Asia Singapore PTE LTD
- 申请人地址: SG Singapore
- 专利权人: Maxlinear Asia Singapore PTE LTD
- 当前专利权人: Maxlinear Asia Singapore PTE LTD
- 当前专利权人地址: SG Singapore
- 代理机构: McAndrews, Held & Malloy, Ltd.
- 主分类号: H04B7/0417
- IPC分类号: H04B7/0417 ; H04B7/06 ; H04L25/03 ; H04B7/0456
摘要:
A 5G base station transmitter at least partially precodes data for beam forming, and generates digital precoded baseband signals. Cross product circuitry coupled to the digital precoder, generates digital cross products of the digital precoded baseband signals. Both the baseband signals and the cross products are put through digital-to-analog converters (DACs), then provided to an analog non-linear precoder. The analog non-linear precoder combines the analog baseband signals, the cross products, with pre-distortion and precoder coefficients to generate a signal that is pre-compensated for power amplifier non-linearity. The pre-compensated signal is amplified by the power amplifier and transmitted via a phased antenna array. The number of extra DACs required for inserting pre-distortion when a hybrid digital/analog precoder is used can be limited to approximately N RF ( N RF - 1 ) 2 , where NRF is the number of outputs of the digital precoder. This is significantly fewer than the number of extra DACs used by other methods.
公开/授权文献
- US20190044585A1 Predistortion For Hybrid Digital/Analog Precoders 公开/授权日:2019-02-07
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