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公开(公告)号：JP2001127819A
公开(公告)日：2001-05-11
申请号：JP2000277712
申请日：2000-09-13
Applicant: LUCENT TECHNOLOGIES INC
Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for reducing the power in an adjacent channel in a radio communication system. SOLUTION: A signal to apply correcting is inputted to an amplifier 16 after being predistorted by a digital predistortion generator 12 for digital application, and corrected equivalently and inversely to an estimate distortion generated by that amplifier 16. The correction and amplified distortion are mutually canceled. As a result, linear converting characteristics are provided for a whole system 10. On such conditions, the power in the adjacent channel is reduced.
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2.发明专利
公开(公告)号：CA2317901C
公开(公告)日：2011-04-19
申请号：CA2317901
申请日：2000-09-07
Applicant: LUCENT TECHNOLOGIES INC
Abstract: This invention relates to a method and apparatus for reducing adjacent channel power in wireless communication systems. More particularly, the present invention is directed to a system for digitally and adaptively pre-distorting a signal that includes applying a correction to the signal before it is applied to the input of an amplifier such that the correction is equal and opposite to anticipated distortion produced by the amplifier. Thus, the correction and the amplifier distortion cancel one another resulting in a system with an overall linear transfer characteristic. In these circumstances, the adjacent channel power is desirably reduced.
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Patent Agency Ranking3.发明专利
公开(公告)号：DE60044485D1
公开(公告)日：2010-07-15
申请号：DE60044485
申请日：2000-09-04
Applicant: LUCENT TECHNOLOGIES INC
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公开(公告)号：CA2317901A1
公开(公告)日：2001-03-14
申请号：CA2317901
申请日：2000-09-07
Applicant: LUCENT TECHNOLOGIES INC
Abstract: This invention relates to a method and apparatus for reducing adjacent chann el power in wireless communication systems. More particularly, the present invention is directed to a system for digitally and adaptively pre-distorting a signal th at includes applying a correction to the signal before it is applied to the input of an amplifier such that the correction is equal and opposite to anticipated distortion produced by the amplifier. Thus, the correction and the amplifier distortion cancel one another resulting in a system with an overall linear transfer characteristic. In the se circumstances, the adjacent channel power is desirably reduced.
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5.发明专利
公开(公告)号：AU773197B2
公开(公告)日：2004-05-20
申请号：AU5655400
申请日：2000-09-07
Applicant: LUCENT TECHNOLOGIES INC
Abstract: This invention relates to a method and apparatus for reducing adjacent channel power in wireless communication systems. More particularly, the present invention is directed to a system for digitally and adaptively pre-distorting (in 112) a signal that includes applying a correction to the signal before it is applied to the input of an amplifier (16) such that the correction is equal and opposite to anticipated distortion produced by the amplifier. Thus, the correction and the amplifier distortion cancel one another resulting in a system with an overall linear transfer characteristic. In these circumstances, the adjacent channel power is desirably reduced.
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公开(公告)号：BR0004033A
公开(公告)日：2001-04-17
申请号：BR0004033
申请日：2000-09-06
Applicant: LUCENT TECHNOLOGIES INC
Abstract: This invention relates to a method and apparatus for reducing adjacent channel power in wireless communication systems. More particularly, the present invention is directed to a system for digitally and adaptively pre-distorting (in 112) a signal that includes applying a correction to the signal before it is applied to the input of an amplifier (16) such that the correction is equal and opposite to anticipated distortion produced by the amplifier. Thus, the correction and the amplifier distortion cancel one another resulting in a system with an overall linear transfer characteristic. In these circumstances, the adjacent channel power is desirably reduced.
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7.发明专利
公开(公告)号：AU5655400A
公开(公告)日：2001-03-15
申请号：AU5655400
申请日：2000-09-07
Applicant: LUCENT TECHNOLOGIES INC
Abstract: This invention relates to a method and apparatus for reducing adjacent channel power in wireless communication systems. More particularly, the present invention is directed to a system for digitally and adaptively pre-distorting (in 112) a signal that includes applying a correction to the signal before it is applied to the input of an amplifier (16) such that the correction is equal and opposite to anticipated distortion produced by the amplifier. Thus, the correction and the amplifier distortion cancel one another resulting in a system with an overall linear transfer characteristic. In these circumstances, the adjacent channel power is desirably reduced.
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