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公开(公告)号：US10367671B2
公开(公告)日：2019-07-30
申请号：US15824146
申请日：2017-11-28
发明人： Dengwei Fu , Colin Fraser , Amir Eliaz , Daniel Stopler , Sandeep Shenoy
摘要： High peak-to-average ratio of OFDM signals requires large back-off from an RF power amplifier's saturation power. A spectral shaper device therefore increases the output power and efficiency of the power amplifier. The shaper device performs linearization through digital predistortion, based on an out-of-band regrowth limit, as well as the EVM requirement for a particular data rate. The shaper can distribute the error energy, precisely, over frequencies such that each of the inband and out-of-band requirements is independently and individually met. The shaper distributes error energy to frequency regions in the spectrum to the maximally allowed by the standards and regulations, while not increasing the total error. The error energy is kept to the minimum where it is crucial in meeting EVM requirements. In this way, the shaper maximizes the allowable output power of the nonlinear power amplifier.
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公开(公告)号：US10361808B2
公开(公告)日：2019-07-23
申请号：US15340571
申请日：2016-11-01
发明人： Amir Eliaz , Ilan Reuven , Daniel Stopler , Roy Oren , Shimon Benjo
摘要： A device includes circuitry configured to determine one or more signal processing capabilities of another device in communication with the device. The device configures a signal compression mode of the device to correspond to a first signal compression mode of a plurality signal compression modes based on the one or more signal processing capabilities of the other device. The device s configured to modify, in response to detecting variations in one or more network configuration properties or the one or more signal processing capabilities of the other device, the signal compression mode of the device.
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公开(公告)号：US20190165981A1
公开(公告)日：2019-05-30
申请号：US15824146
申请日：2017-11-28
发明人： Dengwei FU , Colin Fraser , Amir Eliaz , Daniel Stopler , Sandeep Shenoy
CPC分类号： H04L27/2628 , H04B1/04 , H04B2001/0408 , H04L25/03834 , H04L27/2624
摘要： High peak-to-average ratio of OFDM signals requires large back-off from an RF power amplifier's saturation power. A spectral shaper device therefore increases the output power and efficiency of the power amplifier. The shaper device performs linearization through digital predistortion, based on an out-of-band regrowth limit, as well as the EVM requirement for a particular data rate. The shaper can distribute the error energy, precisely, over frequencies such that each of the inband and out-of-band requirements is independently and individually met. The shaper distributes error energy to frequency regions in the spectrum to the maximally allowed by the standards and regulations, while not increasing the total error. The error energy is kept to the minimum where it is crucial in meeting EVM requirements. In this way, the shaper maximizes the allowable output power of the nonlinear power amplifier.
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