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. 发明申请

US20070192394A1 Processor and method for performing a fast fourier transform and/or an inverse fast fourier transform of a complex input signal 有权
标题翻译：用于执行复合输入信号的快速傅里叶变换和/或快速傅立叶变换的处理器和方法
公开(公告)号：US20070192394A1
公开(公告)日：2007-08-16
申请号：US11643936
申请日：2006-12-22
申请人： Zhongjun Wang , Lee Yeo , Wenzhen Li , Yanxin Yan , Yujing Ting , Masayuki Tomisawa
发明人： Zhongjun Wang , Lee Yeo , Wenzhen Li , Yanxin Yan , Yujing Ting , Masayuki Tomisawa
IPC分类号： G06F17/14
CPC分类号： G06F17/142 , H04L27/263 , H04L27/265
摘要： A processor for performing a Fast Fourier Transform and/or an Inverse Fast Fourier Transform of a complex input signal comprises a first stage for passing the input signal to a second stage when a Fast Fourier Transform procedure is to be performed and for swapping the real and imaginary components of the complex input signal before passing the signal to the second stage if an Inverse Fast Fourier Transform procedure is to be performed. The second stage has first and second radix-4 butterfly elements. A third stage is arranged to switch between first and second operating modes, the second operating mode being for processing a complex conjugate symmetrical input signal. A fourth stage has a plurality of processing units, one or more of the processing units comprising a radix-2 pipelined Fast Fourier Transform processor. The first and second radix-4 butterfly elements are arranged to perform a butterfly operation on the complex input signal to generate and deliver one or more components of a processed signal to the fourth stage. The fourth stage is arranged to process the processed signal received from the first stage according to a Fast Fourier Transform processing procedure to produce an output signal. There is also disclosed a method for performing a Fast Fourier Transform and/or Inverse Fast Fourier Transform of a complex input signal.
摘要翻译：用于执行复数输入信号的快速傅里叶变换和/或快速傅里叶逆变换的处理器包括用于当要执行快速傅里叶变换过程时将输入信号传递到第二级的第一级，并用于交换真实和如果要执行快速傅里叶逆变换方法，则将信号传递到第二级之前的复数输入信号的虚分量。第二阶段有第一和第四个基数-4蝴蝶元素。第三级被设置为在第一和第二操作模式之间切换，第二操作模式用于处理复共轭对称输入信号。第四级具有多个处理单元，一个或多个处理单元包括基数为2的流水线快速傅里叶变换处理器。第一和第二基数-4蝶形元件被布置成对复数输入信号执行蝶形运算，以产生并将处理的信号的一个或多个分量递送到第四级。第四级被设置为根据快速傅里叶变换处理程序处理从第一级接收的处理信号以产生输出信号。还公开了一种用于执行复合输入信号的快速傅里叶变换和/或快速傅里叶逆变换的方法。

2. 发明申请

US20070189156A1 Method, apparatus and receiver for demapping dual carrier modulated COFDM signals 有权
标题翻译：用于解映射双载波调制COFDM信号的方法，装置和接收机
公开(公告)号：US20070189156A1
公开(公告)日：2007-08-16
申请号：US11638707
申请日：2006-12-14
申请人： Zhongjun Wang , Lee Yeo , Yanxin Yan , Yujing Ting , Masayuki Tomisawa , Wenzhen Li
发明人： Zhongjun Wang , Lee Yeo , Yanxin Yan , Yujing Ting , Masayuki Tomisawa , Wenzhen Li
IPC分类号： H04L12/26
CPC分类号： H04L27/2647 , H04L1/0054 , H04L1/0071 , H04L25/067 , H04L27/3809
摘要： A method for demapping dual carrier modulated COFDM signals comprises normalizing an estimated channel state information signal to obtain a normalized channel state information signal, determining a Y-domain weighting factor from the normalized channel state information signal, determining an X-domain weighting factor from the normalized channel state information signal, performing equalization on a received data OFDM signal to obtain an equalized data signal, weighting an equalized data signal using the Y-domain weighting factor and the X-domain weighting factor to generate a weighted input signal of a demapper and performing linear demapping of the weighted input signal in the demapper. There is also disclosed an apparatus for demapping dual carrier modulated COFDM signals and a receiver comprising such an apparatus.
摘要翻译：一种用于对双载波调制COFDM信号进行解映射的方法包括对估计的信道状态信息信号进行归一化以获得归一化信道状态信息信号，从归一化信道状态信息信号确定Y域加权因子，从归一化信道状态信息信号，对接收到的数据OFDM信号执行均衡以获得均衡的数据信号，使用Y域加权因子和X域加权因子对均衡数据信号进行加权，以产生解映射器的加权输入信号，对解映射器中的加权输入信号进行线性解映射。还公开了一种用于解映射双载波调制COFDM信号的装置和包括这种装置的接收机。

3. 发明授权

US07889813B2 Method, apparatus and receiver for demapping dual carrier modulated COFDM signals 有权
标题翻译：用于解映射双载波调制COFDM信号的方法，装置和接收机
公开(公告)号：US07889813B2
公开(公告)日：2011-02-15
申请号：US11638707
申请日：2006-12-14
申请人： Zhongjun Wang , Lee Guek Yeo , Yanxin Yan , Masayuki Tomisawa , Yujing Ting , Wenzhen Li
发明人： Zhongjun Wang , Lee Guek Yeo , Yanxin Yan , Masayuki Tomisawa , Yujing Ting , Wenzhen Li
IPC分类号： H03K5/159 , H04L27/00 , H04B7/208 , H03D3/00
CPC分类号： H04L27/2647 , H04L1/0054 , H04L1/0071 , H04L25/067 , H04L27/3809
摘要： A method for demapping dual carrier modulated COFDM signals comprises normalizing an estimated channel state information signal to obtain a normalized channel state information signal, determining a Y-domain weighting factor from the normalized channel state information signal, determining an X-domain weighting factor from the normalized channel state information signal, performing equalization on a received data OFDM signal to obtain an equalized data signal, weighting an equalized data signal using the Y-domain weighting factor and the X-domain weighting factor to generate a weighted input signal of a demapper and performing linear demapping of the weighted input signal in the demapper. There is also disclosed an apparatus for demapping dual carrier modulated COFDM signals and a receiver comprising such an apparatus.
摘要翻译：一种用于对双载波调制COFDM信号进行解映射的方法包括对估计的信道状态信息信号进行归一化以获得归一化信道状态信息信号，从归一化信道状态信息信号确定Y域加权因子，从归一化信道状态信息信号，对接收到的数据OFDM信号执行均衡以获得均衡的数据信号，使用Y域加权因子和X域加权因子对均衡数据信号进行加权，以产生解映射器的加权输入信号，对解映射器中的加权输入信号进行线性解映射。还公开了一种用于解映射双载波调制COFDM信号的装置和包括这种装置的接收机。

4. 发明授权

US07818360B2 Processor and method for performing a fast fourier transform and/or an inverse fast fourier transform of a complex input signal 有权
标题翻译：用于执行复合输入信号的快速傅里叶变换和/或快速傅立叶变换的处理器和方法
公开(公告)号：US07818360B2
公开(公告)日：2010-10-19
申请号：US11643936
申请日：2006-12-22
申请人： Zhongjun Wang , Lee Guek Yeo , Wenzhen Li , Yanxin Yan , Yujing Ting , Masayuki Tomisawa
发明人： Zhongjun Wang , Lee Guek Yeo , Wenzhen Li , Yanxin Yan , Yujing Ting , Masayuki Tomisawa
IPC分类号： G06F17/14
CPC分类号： G06F17/142 , H04L27/263 , H04L27/265
摘要： A processor for performing a Fast Fourier Transform and/or an Inverse Fast Fourier Transform of a complex input signal comprises a first stage for passing the input signal to a second stage when a Fast Fourier Transform procedure is to be performed and for swapping the real and imaginary components of the complex input signal before passing the signal to the second stage if an Inverse Fast Fourier Transform procedure is to be performed. The second stage has first and second radix-4 butterfly elements. A third stage is arranged to switch between first and second operating modes, the second operating mode being for processing a complex conjugate symmetrical input signal. A fourth stage has a plurality of processing units, one or more of the processing units comprising a radix-2 pipelined Fast Fourier Transform processor. The first and second radix-4 butterfly elements are arranged to perform a butterfly operation on the complex input signal to generate and deliver one or more components of a processed signal to the fourth stage. The fourth stage is arranged to process the processed signal received from the first stage according to a Fast Fourier Transform processing procedure to produce an output signal. There is also disclosed a method for performing a Fast Fourier Transform and/or Inverse Fast Fourier Transform of a complex input signal.
摘要翻译：用于执行复数输入信号的快速傅里叶变换和/或快速傅里叶逆变换的处理器包括用于当要执行快速傅里叶变换过程时将输入信号传递到第二级的第一级，并用于交换真实和如果要执行快速傅里叶逆变换方法，则将信号传递到第二级之前的复数输入信号的虚分量。第二阶段有第一和第四个基数-4蝴蝶元素。第三级被设置为在第一和第二操作模式之间切换，第二操作模式用于处理复共轭对称输入信号。第四级具有多个处理单元，一个或多个处理单元包括基数为2的流水线快速傅里叶变换处理器。第一和第二基数-4蝶形元件被布置成对复数输入信号执行蝶形运算，以产生并将经处理的信号的一个或多个分量递送到第四级。第四级被设置为根据快速傅里叶变换处理程序处理从第一级接收的处理信号以产生输出信号。还公开了一种用于执行复合输入信号的快速傅里叶变换和/或快速傅里叶逆变换的方法。

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