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1. 发明授权

US07941117B2 Digital approach for image rejection correction in low intermediate frequency conversion tuner 有权
标题翻译：低中频转换调谐器中的图像抑制校正的数字方法
公开(公告)号：US07941117B2
公开(公告)日：2011-05-10
申请号：US12039806
申请日：2008-02-29
申请人： Jun Ma , Ahmed Eltawil , Xiaoyu Fu
发明人： Jun Ma , Ahmed Eltawil , Xiaoyu Fu
IPC分类号： H04B1/10
CPC分类号： H04B1/30 , H04L27/3863 , H04L27/3872
摘要： A method of processing an in-phase signal component and a quadrature signal component of a low intermediate frequency (LIF) signal includes estimating and correcting an amplitude imbalance between a digitized in-phase signal component and a digitized quadrature signal component at a first point in time, and estimating and correcting a phase imbalance between the digitized in-phase signal component and the digitized quadrature signal component at a second point in time in response to the correcting process. The digitized in-phase signal component corresponds to the in-phase signal component at the first point in time and the digitized quadrature signal component corresponds to the quadrature signal component at the first point in time. The second point in the time is subsequent to the first point in time.
摘要翻译：处理低中频（LIF）信号的同相信号分量和正交信号分量的方法包括：估计和校正数字化的同相信号分量与数字化正交信号分量之间的振幅不平衡时间，并且响应于校正处理，在第二时间点估计和校正数字化同相信号分量和数字化正交信号分量之间的相位不平衡。数字化的同相信号分量对应于第一时间点的同相信号分量，数字化的正交信号分量对应于第一时间点的正交信号分量。第二点在第一时间点之后。

2. 发明申请

US20090221255A1 DIGITAL APPROACH FOR IMAGE REJECTION CORRECTION IN LOW INTERMEDIATE FREQUENCY CONVERSION TUNER 有权
标题翻译：低频中频转换调谐器图像抑制校正的数字方法
公开(公告)号：US20090221255A1
公开(公告)日：2009-09-03
申请号：US12039806
申请日：2008-02-29
申请人： Jun Ma , Ahmed Eltawil , Xiaoyu Fu
发明人： Jun Ma , Ahmed Eltawil , Xiaoyu Fu
IPC分类号： H04B1/10 , H03H11/16 , H03L5/00
CPC分类号： H04B1/30 , H04L27/3863 , H04L27/3872
摘要： A method of processing an in-phase signal component and a quadrature signal component of a low intermediate frequency (LIF) signal includes estimating and correcting an amplitude imbalance between a digitized in-phase signal component and a digitized quadrature signal component at a first point in time, and estimating and correcting a phase imbalance between the digitized in-phase signal component and the digitized quadrature signal component at a second point in time in response to the correcting process. The digitized in-phase signal component corresponds to the in-phase signal component at the first point in time and the digitized quadrature signal component corresponds to the quadrature signal component at the first point in time. The second point in the time is subsequent to the first point in time.
摘要翻译：处理低中频（LIF）信号的同相信号分量和正交信号分量的方法包括：估计和校正数字化的同相信号分量与数字化正交信号分量之间的振幅不平衡时间，并且响应于校正处理，在第二时间点估计和校正数字化同相信号分量和数字化正交信号分量之间的相位不平衡。数字化的同相信号分量对应于第一时间点的同相信号分量，数字化的正交信号分量对应于第一时间点的正交信号分量。第二点在第一时间点之后。

3. 发明授权

US07106784B2 Universal rake receiver 有权
公开(公告)号：US07106784B2
公开(公告)日：2006-09-12
申请号：US10057430
申请日：2002-01-25
申请人： Ahmed Eltawil , Babak Daneshrad
发明人： Ahmed Eltawil , Babak Daneshrad
IPC分类号： H04B1/69 , H04B1/707
CPC分类号： H04B1/709 , H04B1/712 , H04B7/0842 , H04B2201/70711
摘要： A universal rake receiver architecture includes modular independent processing units that can be flexibly programmed to support different modes of operation. The processing units are capable of performing the basic correlation calculations of DS-CDMA and each unit has an internal local memory and controller that controls its mode of operation. Each unit performs the required synchronization and demodulation operations for a multipath of a signal in the digital domain using all-digital frequency and timing correction techniques. Frequency feedback need not be supplied to the analog section of the receiver. Interpolation most preferably is used to find the optimum sampling position of each incoming chip. This independence allows the receiver to be used with one to several antennas without design modifications.

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