公开(公告)号：EP0991210B1

公开(公告)日：2009-11-25

申请号：EP99307452.5

申请日：1999-09-21

申请人： LUCENT TECHNOLOGIES INC.

发明人： Myer, Robert Evan

IPC分类号： H04B15/00 ,  H04L27/36 ,  H03F1/32

CPC分类号： H03F1/3235 ,  H03F2201/3212

公开(公告)号：EP1017163A1

公开(公告)日：2000-07-05

申请号：EP99309847.4

申请日：1999-12-07

申请人： LUCENT TECHNOLOGIES INC.

发明人： Myer, Robert Evan

IPC分类号： H03F1/32

CPC分类号： H03F1/3229

摘要： A pilot signal detection system uses a band reject filter to reject the frequency band of at least one carrier signal to improve pilot signal detection. For example, in a feed forward distortion reduction system, the carrier signal(s) is on a main signal path along with a pilot signal which is injected into the main signal path at a frequency adjacent to the frequency band of the carrier signal(s). The carrier signal(s) and the pilot signal are amplified on the main signal path, resulting in distortion on the main signal path. To reduce the distortion from the main signal path, the feed forward distortion reduction system detects and reduces the pilot signal. To improve detection of the pilot signal, the pilot signal detection system provides a signal representative of the carrier signal(s) and the pilot signal with distortion from the main signal path onto a pilot detection path. A band reject filter on the pilot detection path rejects the frequency band of the carrier signal(s) while allowing the frequency of the pilot signal to pass through to pilot detect circuitry. Without the presence of the carrier signal(s), the pilot detect circuitry can more accurately detect the pilot signal on the pilot detection path. In response to the detected pilot signal, the pilot detect circuitry can provide control signal(s) to improve the reduction of the pilot signal by changing the relative phase and/or gain between the signals on the main signal path and the feed forward path. Thus, by improving the detection of the pilot signal, the pilot detection system improves the reduction of the pilot signal and thereby of the distortion.

摘要翻译： 导频信号检测系统使用带阻滤波器来抑制至少一个载波信号的频带以改善导频信号检测。 例如，在前馈失真降低系统中，载波信号在主信号路径上，以及以与载波信号的频带相邻的频率注入到主信号路径中的导频信号（s ）。 载波信号和导频信号在主信号路径上被放大，导致主信号路径上的失真。 为了减少主信号路径的失真，前馈失真减小系统检测并减小导频信号。 为了改进导频信号的检测，导频信号检测系统提供表示载波信号的信号和具有从主信号路径到导频检测路径的失真的导频信号。 导频检测路径上的带阻滤波器抑制载波信号的频带，同时允许导频信号的频率通过导频检测电路。 在没有载波信号的情况下，导频检测电路可以更精确地检测导频检测路径上的导频信号。 响应于检测到的导频信号，导频检测电路可以通过改变主信号路径和前馈路径上的信号之间的相对相位和/或增益来提供控制信号以改善导频信号的减少。 因此，通过改善导频信号的检测，导频检测系统改善了导频信号的减少并由此改善了失真。

公开(公告)号：EP0966096A1

公开(公告)日：1999-12-22

申请号：EP99304464.3

申请日：1999-06-08

申请人： LUCENT TECHNOLOGIES INC.

发明人： Myer, Robert Evan ,  Chi-Chieh Wen, Jack ,  Patel, Mohan

IPC分类号： H03D7/16 ,  H03F1/32 ,  H03D3/00

CPC分类号： H03F1/3229 ,  H03D7/165 ,  H03D2200/0088

摘要： A frequency mixing system (10) provides an expanded dynamic range when compared to the dynamic range(s) of an individual mixer(s) (12) that makes up the frequency mixing system. The frequency mixing system adjusts (by 14) the amplitude of an input signal (S) to be frequency mixed (in 12) to produce a frequency converted signal (S 1 + D 1 ) with an acceptable and/or lower (when compared to the amplitude of intermodulation distortion produced by mixing the input signal without amplitude adjustment) amplitude of intermodulation distortion. If the input signal were frequency mixed without the amplitude adjustment, an unacceptable and/or higher level of intermodulation distortion would result (when compared to the corresponding intermodulation distortion if the amplitude-adjusted signal were mixed by an individual mixer). Adjusting the amplitude of the input signal creates an adjusted signal (S+D) with signal distortion on a first path (20). The frequency mixing system uses a feed-forward arrangement to reduce the signal distortion created by adjusting the amplitude of the input signal, thereby producing the desired frequency converted signal with the lower and/or acceptable level of intermodulation distortion. For example, the signal distortion (D) from the first path can be placed on a second path (22), frequency converted using a second mixer (38) on the second path, and subsequently put back into the first path to combine (at 16) with the signal distortion on the first path to provide the desired frequency converted signal with the acceptable and/or lower level of intermodulation distortion. By increasing the relative difference between the amplitudes of the desired frequency converted signal and of the intermodulation distortion, the frequency mixing system provides an expanded dynamic range.

摘要翻译： 与组成混频系统的单个混合器（12）的动态范围相比，频率混合系统（10）提供了扩展的动态范围。 频率混合系统调整（14）要频率混合的输入信号（S）的振幅（12），以产生具有可接受和/或更低的频率转换信号（S <1> + D <1） （与通过混合输入信号而没有幅度调整产生的互调失真的幅度相比较）互调失真的幅度。 如果输入信号在没有幅度调整的情况下进行频率混合，则会产生不可接受的和/或更高的互调失真水平（如果通过单个混频器混合调幅信号，则与相应的互调失真相比）。 调整输入信号的幅度产生在第一路径（20）上具有信号失真的经调整的信号（S + D）。 频率混合系统使用前馈布置来减少通过调节输入信号的幅度而产生的信号失真，从而产生具有较低和/或可接受的互调失真水平的期望的频率转换信号。 例如，来自第一路径的信号失真（D）可以被放置在第二路径（22）上，在第二路径上使用第二混合器（38）进行频率转换，然后放回第一路径以组合（在 16），其具有第一路径上的信号失真，以提供具有可接受和/或较低级别的互调失真的期望的频率转换信号。 通过增加所需频率转换信号的幅度与互调失真之间的相对差异，频率混合系统提供了扩展的动态范围。

公开(公告)号：EP0895349A1

公开(公告)日：1999-02-03

申请号：EP98305810.8

申请日：1998-07-21

申请人： LUCENT TECHNOLOGIES INC.

发明人： Myer, Robert Evan

IPC分类号： H03F1/32

CPC分类号： H03F1/3235 ,  H03F2201/3212

摘要： An automatic control system for reducing distortion produced by electrical circuit where a pilot signal pulse is applied to the electrical circuit for a period of time during which the system determines the adjustments to be made to its circuitry to reduce the distortion.

公开(公告)号：EP0851606A2

公开(公告)日：1998-07-01

申请号：EP97310010.0

申请日：1997-12-11

申请人： LUCENT TECHNOLOGIES INC.

发明人： Bi, Qi ,  Myer, Robert Evan

IPC分类号： H04B7/155

CPC分类号： H04B7/15578 ,  H04B1/525

摘要： The invention is a repeater for a telecommunications transmission system such as a CDMA wireless system. The repeater reduces leakage by means of a feedback signal (on 30,31,32,33) whose amplitude and phase are adjusted (in 31) in response to the amplitude and phase of a sampled input signal (from 35) when a switch (24) turns off the normal output of the repeater for a short period of time. In one embodiment, a pilot signal (from 40) is transmitted during this time period so that the sampled input is the leakage signal. In another embodiment, the sampled input is the normal transmission signal received during the time period.

摘要翻译： 本发明是用于诸如CDMA无线系统的电信传输系统的中继器。 响应于采样输入信号（来自35）的幅度和相位，中继器借助反馈信号（在30,31,32,33）减少泄漏，所述反馈信号的振幅和相位被调整（在31中） 24）在短时间内关闭中继器的正常输出。 在一个实施例中，在该时间段期间发送导频信号（来自40），使得采样的输入是泄漏信号。 在另一个实施例中，采样输入是在该时间段期间接收到的正常传输信号。

公开(公告)号：EP0984554B1

公开(公告)日：2009-02-18

申请号：EP99306643.0

申请日：1999-08-23

申请人： LUCENT TECHNOLOGIES INC.

发明人： Myer, Robert Evan

IPC分类号： H03F1/32

CPC分类号： H03F1/3229

公开(公告)号：EP1003278B1

公开(公告)日：2008-04-09

申请号：EP99308925.9

申请日：1999-11-09

申请人： Lucent Technologies Inc.

发明人： Myer, Robert Evan

IPC分类号： H03F1/32

CPC分类号： H03F1/3235

公开(公告)号：EP1079518A3

公开(公告)日：2004-01-02

申请号：EP00306917.6

申请日：2000-08-14

申请人： LUCENT TECHNOLOGIES INC.

发明人： Myer, Robert Evan

IPC分类号： H03F1/32

CPC分类号： H03F3/211 ,  H03F1/3229 ,  H03F1/3241 ,  H03F2201/3221

摘要： Method and apparatus for substantially eliminating distortion produced by a processing circuit where the distortion produced by a first circuit with similar characteristics as the processing circuit is modified and the modified distortion is applied to the processing circuit. The distortion produced by the first circuit is modified based on information derived from distortion produced by the processing circuit. The modified distortion, when applied to the processing circuit, combines destructively with distortion produced by the processing circuit.

公开(公告)号：EP1003278A3

公开(公告)日：2001-10-10

申请号：EP99308925.9

申请日：1999-11-09

申请人： LUCENT TECHNOLOGIES INC.

发明人： Myer, Robert Evan

IPC分类号： H03F1/32

CPC分类号： H03F1/3235

摘要： A nested feed forward distortion reduction system, which reduces the distortion from a main amplifier (62) on a main signal path, uses a nested feed forward arrangement (82) for the correction amplifier (86) to reduce the distortion produced from the correction amplifier. In reducing the distortion from the correction amplifier(s) and using progressively higher quality correction amplifier(s), the nested feed forward arrangement produces an improved, more stable representation of the distortion from the main amplifier, thereby alleviating the need for variable gain and/or phase control in producing amplified signal with reduced distortion.

公开(公告)号：EP1079518A2

公开(公告)日：2001-02-28

申请号：EP00306917.6

申请日：2000-08-14

申请人： LUCENT TECHNOLOGIES INC.

发明人： Myer, Robert Evan

IPC分类号： H03F1/32

CPC分类号： H03F3/211 ,  H03F1/3229 ,  H03F1/3241 ,  H03F2201/3221

摘要： Method and apparatus for substantially eliminating distortion produced by a processing circuit where the distortion produced by a first circuit with similar characteristics as the processing circuit is modified and the modified distortion is applied to the processing circuit. The distortion produced by the first circuit is modified based on information derived from distortion produced by the processing circuit. The modified distortion, when applied to the processing circuit, combines destructively with distortion produced by the processing circuit.

摘要翻译： 用于基本上消除由处理电路产生的失真产生的失真的方法和装置，其中由与处理电路类似的特性的第一电路产生的失真被修改，并且将修改的失真应用于处理电路。 基于由处理电路产生的失真导出的信息来修改由第一电路产生的失真。 修改的失真在应用于处理电路时，与处理电路产生的失真相结合。