专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08082006B2 Base station, receiving apparatus, and receiver trouble diagnosing method 失效
标题翻译：基站，接收设备和接收机故障诊断方法
公开(公告)号：US08082006B2
公开(公告)日：2011-12-20
申请号：US11914264
申请日：2005-12-19
申请人： Yoshiaki Hasegawa , Akihiro Saito , Tomoya Uchiike , Yoshihiro Kanomata
发明人： Yoshiaki Hasegawa , Akihiro Saito , Tomoya Uchiike , Yoshihiro Kanomata
IPC分类号： H04M1/00 , H04B1/38
CPC分类号： H04W88/08 , H04B1/18 , H04B17/21 , H04W24/00
摘要： A receiver of a wireless base station that uses a simple mode to detect a failure is provided, and an SW 201 switches whether an input port of the receiver 133 is to be connected with an antenna 114 or to be terminated. An LNA (a low noise amplifier) 205 amplifies an input signal with a low distortion. SWs 202 and 203 switch between a first path which runs through the LNA 205 and a second path 204 which does not run through the LNA 205. An AGC AMP, the gain of which is controlled such that the output thereof is constant, amplifies the signal with the controlled gain. A base station control section uses the SW 201 to terminate the input port of the receiver so that thermal noise is input to the LNA 205. Further, the SWs 202 and 203 are changed over to determine the normality of the receiver based on the fact that a first gain of an AGC-AMP 211 when connected to the first path, a second gain of the AGC-AMP 211 when connected to the second path, and a difference between the first and second gains fall within their respective predetermined ranges.
摘要翻译：提供了使用简单模式来检测故障的无线基站的接收机，并且SW201切换接收机133的输入端口是否与天线114连接或被终止。 LNA（低噪声放大器）205以低失真放大输入信号。 SW 202和203在穿过LNA 205的第一路径和不穿过LNA 205的第二路径204之间切换。AGC AMP，其增益被控制使得其输出恒定，放大信号具有可控增益。基站控制部分使用SW 201终止接收机的输入端口，使得热噪声被输入到LNA 205.此外，SW 202和203被转换以基于以下事实来确定接收机的正常性：连接到第一路径时AGC-AMP 211的第一增益，当连接到第二路径时AGC-AMP 211的第二增益，以及第一和第二增益之间的差落在它们各自的预定范围内。

2. 发明授权

US07995674B2 Digital predistortion transmitter 有权
标题翻译：数字预失真发射机
公开(公告)号：US07995674B2
公开(公告)日：2011-08-09
申请号：US12929083
申请日：2010-12-29
申请人： Kazuyuki Hori , Shouhei Murakami , Yuji Ishida , Tomoya Uchiike , Yoshiaki Hasegawa
发明人： Kazuyuki Hori , Shouhei Murakami , Yuji Ishida , Tomoya Uchiike , Yoshiaki Hasegawa
IPC分类号： H04L25/49 , H03C1/06
CPC分类号： H04L27/368 , H03F1/3247 , H03F1/3258
摘要： There is a need for effectively compensating distortion when a predistortion transmitter is subject to not only a memory effect due to nonlinearity of an amplifier, but also a modulator's DC offset, IQ unbalance, or local quadrature error. A predistortor to be used is a polynomial predistortor including a polynomial basis generation portion and an inner product calculation portion. The polynomial basis generation portion delays a real part and an imaginary part of a complex input signal Sx=Ix+jQx for up to M samples to generate 2(M+1) signals, duplicately combines these signals to generate monomials having maximum degree N, and outputs, as a basis vector, all or part of the monomials depending or needs. The inner product calculation portion performs an inner product calculation using a coefficient vector, i.e., a set of complex numbers sized equally to the basis vector to find a polynomial value and outputs the value as a complex signal.
摘要翻译：当预失真发射机不仅由于放大器的非线性而受到存储器影响，而且还涉及调制器的DC偏移，IQ不平衡或局部正交误差时，需要有效地补偿失真。要使用的预失真器是包括多项式基础生成部分和内积计算部分的多项式预失真器。多项式基产生部分将复数输入信号Sx = Ix + jQx的实部和虚部延迟最多M个样本以产生2（M + 1）个信号，将这些信号重复组合以产生具有最大度N的单项式，并作为基本向量输出依赖或需要的全部或部分单项式。内积计算部分使用系数向量，即与基矢量相等的一组复数来执行内积计算，以找到多项式值，并输出该值作为复信号。

3. 发明授权

US07864881B2 Digital predistortion transmitter 有权
公开(公告)号：US07864881B2
公开(公告)日：2011-01-04
申请号：US11703768
申请日：2007-02-08
申请人： Kazuyuki Hori , Shouhei Murakami , Yuji Ishida , Tomoya Uchiike , Yoshiaki Hasegawa
发明人： Kazuyuki Hori , Shouhei Murakami , Yuji Ishida , Tomoya Uchiike , Yoshiaki Hasegawa
IPC分类号： H04L25/49
CPC分类号： H04L27/368 , H03F1/3247 , H03F1/3258
摘要： There is a need for effectively compensating distortion when a predistortion transmitter is subject to not only a memory effect due to nonlinearity of an amplifier, but also a modulator's DC offset, IQ unbalance, or local quadrature error. A predistortor to be used is a polynomial predistortor including a polynomial basis generation portion and an inner product calculation portion. The polynomial basis generation portion delays a real part and an imaginary part of a complex input signal Sx=Ix+jQx for up to M samples to generate 2(M+1) signals, duplicately combines these signals to generate monomials having maximum degree N, and outputs, as a basis vector, all or part of the monomials depending or needs. The inner product calculation portion performs an inner product calculation using a coefficient vector, i.e., a set of complex numbers sized equally to the basis vector to find a polynomial value and outputs the value as a complex signal.

4. 发明申请

US20090170560A1 Base Station, Receiving Apparatus, and Receiver Trouble Diagnosing Method 失效
标题翻译：基站，接收设备和接收机故障诊断方法
公开(公告)号：US20090170560A1
公开(公告)日：2009-07-02
申请号：US11914264
申请日：2005-12-19
申请人： Yoshiaki Hasegawa , Akihiro Saito , Tomoya Uchiike , Yoshihiro Kanomata
发明人： Yoshiaki Hasegawa , Akihiro Saito , Tomoya Uchiike , Yoshihiro Kanomata
IPC分类号： H04M1/00 , H04B1/06 , H04B17/00
CPC分类号： H04W88/08 , H04B1/18 , H04B17/21 , H04W24/00
摘要： A receiver of a wireless base station that uses a simple mode to detect a failure is provided, and an SW 201 switches whether an input port of the receiver 133 is to be connected with an antenna 114 or to be terminated. An LNA (a low noise amplifier) 205 amplifies an input signal with a low distortion. SWs 202 and 203 switch between a first path which runs through the LNA 205 and a second path 204 which does not run through the LNA 205. An AGC AMP, the gain of which is controlled such that the output thereof is constant, amplifies the signal with the controlled gain. A base station control section uses the SW 201 to terminate the input port of the receiver so that thermal noise is input to the LNA 205. Further, the SWs 202 and 203 are changed over to determine the normality of the receiver based on the fact that a first gain of an AGC-AMP 211 when connected to the first path, a second gain of the AGC-AMP 211 when connected to the second path, and a difference between the first and second gains fall within their respective predetermined ranges.
摘要翻译：提供了使用简单模式来检测故障的无线基站的接收机，并且SW 201切换接收机133的输入端口是否与天线114连接或被终止。 LNA（低噪声放大器）205以低失真放大输入信号。 SW 202和203在穿过LNA 205的第一路径和不穿过LNA 205的第二路径204之间切换。AGC AMP，其增益被控制使得其输出恒定，放大信号具有可控增益。基站控制部分使用SW 201终止接收机的输入端口，使得热噪声被输入到LNA 205.此外，SW 202和203被转换以基于以下事实来确定接收机的正常性：连接到第一路径时AGC-AMP 211的第一增益，当连接到第二路径时AGC-AMP 211的第二增益，以及第一和第二增益之间的差落在它们各自的预定范围内。

5. 发明申请

US20070237260A1 Digital predistortion transmitter 有权
标题翻译：数字预失真发射机
公开(公告)号：US20070237260A1
公开(公告)日：2007-10-11
申请号：US11703768
申请日：2007-02-08
申请人： Kazuyuki Hori , Shouhei Murakami , Yuji Ishida , Tomoya Uchiike , Yoshiaki Hasegawa
发明人： Kazuyuki Hori , Shouhei Murakami , Yuji Ishida , Tomoya Uchiike , Yoshiaki Hasegawa
IPC分类号： H04L25/49
CPC分类号： H04L27/368 , H03F1/3247 , H03F1/3258
摘要： There is a need for effectively compensating distortion when a predistortion transmitter is subject to not only a memory effect due to nonlinearity of an amplifier, but also a modulator's DC offset, IQ unbalance, or local quadrature error. A predistortor to be used is a polynomial predistortor including a polynomial basis generation portion and an inner product calculation portion. The polynomial basis generation portion delays a real part and an imaginary part of a complex input signal Sx=Ix+jQx for up to M samples to generate 2 (M+1) signals, duplicately combines these signals to generate monomials having maximum degree N, and outputs, as a basis vector, all or part of the monomials depending or needs. The inner product calculation portion performs an inner product calculation using a coefficient vector, i.e., a set of complex numbers sized equally to the basis vector to find a polynomial value and outputs the value as a complex signal.
摘要翻译：当预失真发射机不仅由于放大器的非线性而受到存储器影响，而且还涉及调制器的DC偏移，IQ不平衡或局部正交误差时，需要有效地补偿失真。要使用的预失真器是包括多项式基础生成部分和内积计算部分的多项式预失真器。多项式基产生部分将复数输入信号Sx = Ix + jQx的实部和虚部延迟最多M个样本以产生2（M + 1）个信号，将这些信号重复组合以产生具有最大度N的单项式，并作为基本向量输出依赖或需要的全部或部分单项式。内积计算部分使用系数向量，即与基矢量相等的一组复数来执行内积计算，以找到多项式值，并输出该值作为复信号。

6. 发明申请

US20110096865A1 Digital predistortion transmitter 有权
公开(公告)号：US20110096865A1
公开(公告)日：2011-04-28
申请号：US12929083
申请日：2010-12-29
申请人： Kazuyuki Hori , Shouhei Murakami , Yuji Ishida , Tomoya Uchiike , Yoshiaki Hasegawa
发明人： Kazuyuki Hori , Shouhei Murakami , Yuji Ishida , Tomoya Uchiike , Yoshiaki Hasegawa
IPC分类号： H04L27/04
CPC分类号： H04L27/368 , H03F1/3247 , H03F1/3258
摘要： There is a need for effectively compensating distortion when a predistortion transmitter is subject to not only a memory effect due to nonlinearity of an amplifier, but also a modulator's DC offset, IQ unbalance, or local quadrature error. A predistortor to be used is a polynomial predistortor including a polynomial basis generation portion and an inner product calculation portion. The polynomial basis generation portion delays a real part and an imaginary part of a complex input signal Sx=Ix+jQx for up to M samples to generate 2(M+1) signals, duplicately combines these signals to generate monomials having maximum degree N, and outputs, as a basis vector, all or part of the monomials depending or needs. The inner product calculation portion performs an inner product calculation using a coefficient vector, i.e., a set of complex numbers sized equally to the basis vector to find a polynomial value and outputs the value as a complex signal.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式