公开(公告)号：US09602240B1

公开(公告)日：2017-03-21

申请号：US15043803

申请日：2016-02-15

申请人： Signalchip Innovations Private Limited

发明人： Aravind Ganesan ,  Deepak Karkala ,  Rajesh Mundhada

IPC分类号： H04L1/00 ,  H04J11/00

CPC分类号： H04L1/0048 ,  H04B1/71072

摘要： Methods and systems of symbol level interference cancellation at a receiver for multiuser detection is provided. In an embodiment, the method includes performing an interference cancellation based decoding for a plurality of users through a plurality of iterations for generating a plurality of soft bit estimates for each of the users during each of the iterations. Each of the iterations involves sequential cancellation of each of the user signals for performing interference cancellation based decoding for each subsequent user other than a first user. The method also includes re-using the generated plurality of soft bit estimates for performing each subsequent iteration of the interference cancellation based decoding of the plurality of users. A plurality of soft bit estimates associated with each user generated during an (N−1)th iteration is re-used during an Nth iteration for the user, N being a whole number with a minimum value of 2.

公开(公告)号：US20170078048A1

公开(公告)日：2017-03-16

申请号：US15043803

申请日：2016-02-15

申请人： Signalchip Innovations Private Limited

发明人： Aravind Ganesan ,  Deepak Karkala ,  Rajesh Mundhada

IPC分类号： H04L1/00 ,  H04J11/00

CPC分类号： H04L1/0048 ,  H04B1/71072

摘要： Methods and systems of symbol level interference cancellation at a receiver for multiuser detection is provided. In an embodiment, the method includes performing an interference cancellation based decoding for a plurality of users through a plurality of iterations for generating a plurality of soft bit estimates for each of the users during each of the iterations. Each of the iterations involves sequential cancellation of each of the user signals for performing interference cancellation based decoding for each subsequent user other than a first user. The method also includes re-using the generated plurality of soft bit estimates for performing each subsequent iteration of the interference cancellation based decoding of the plurality of users. A plurality of soft bit estimates associated with each user generated during an (N−1)th iteration is re-used during an Nth iteration for the user, N being a whole number with a minimum value of 2.

摘要翻译： 提供了用于多用户检测的接收机处的符号级干扰消除的方法和系统。 在一个实施例中，该方法包括通过多次迭代对多个用户执行基于干扰消除的解码，以在每个迭代期间为每个用户生成多个软比特估计。 每个迭代涉及每个用户信号的顺序取消，用于对除了第一用户之外的每个后续用户执行基于干扰消除的解码。 该方法还包括重新使用所生成的多个软比特估计，用于对多个用户的基于干扰消除的解码进行每个后续迭代。 在用于用户的第N次迭代期间，重新使用在第（N-1）次迭代期间生成的与每个用户相关联的多个软比特估计，N是具有最小值2的整数。

公开(公告)号：US20160365991A1

公开(公告)日：2016-12-15

申请号：US14876586

申请日：2015-10-06

申请人： SIGNALCHIP INNOVATIONS PRIVATE LIMITED

发明人： Aravind Ganesan ,  Deepak Karkala ,  Rajesh Mundhada

IPC分类号： H04L25/02 ,  H04B1/7115 ,  H04B1/7093 ,  H04B7/26

CPC分类号： H04L25/0204 ,  H04B1/7077 ,  H04B1/7115 ,  H04B7/2628 ,  H04L25/0218

摘要： A system and method for performing channel estimation includes a sampling device for sampling a chip based radio signal to generate a plurality of samples. Further, the system includes a coarse path searcher for performing correlation operations of a local pattern with a time shifted first set of samples to obtain correlation values in an uncertainty region. Further, the system includes a Region of Interest (ROI) module determine one or more regions of interest in the uncertainty region. Moreover, the system includes a fine path searcher for performing correlation operations of the local pattern with a time shifted second set of samples to obtain correlation values in the one or more regions of interest.

摘要翻译： 用于执行信道估计的系统和方法包括用于对基于芯片的无线电信号进行采样以产生多个采样的采样装置。 此外，该系统包括粗略路径搜索器，用于执行局部模式与时移第一组样本的相关运算，以获得不确定区域中的相关值。 此外，该系统包括确定不确定区域中的一个或多个感兴趣区域的感兴趣区域（ROI）模块。 此外，该系统包括精细路径搜索器，用于执行局部模式与时移第二组样本的相关运算，以获得一个或多个感兴趣区域中的相关值。