公开(公告)号：US20080267059A1

公开(公告)日：2008-10-30

申请号：US11796956

申请日：2007-04-30

Applicant: Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

Inventor： Eyal Bick ,  Uri Perlmutter ,  Yuval Lomnitz

IPC: H04J11/00 ,  H03D1/00 ,  H04B1/00 ,  H04B7/00

CPC classification number: H04L25/022 ,  H04L25/0228 ,  H04W36/30

Abstract: Methods and arrangements for wireless communications are described. Embodiments include transformations, code, state machines or other logic to receive from a transmitter a signal representing a known sequence of symbols. The signal may be transmitted over a plurality of sub channels. The embodiments may also include determining channel responses at the sub channels and determining a reception of the known sequence. The determining may include treating the channel responses at the sub channels in a differential manner to cancel out channel phase responses and obtain channel amplitudes. In some embodiments, the cancelling may be performed by multiplying frequency domain values representing reception of a sub channel by the complex conjugate of frequency domain values of a neighboring sub channel. Many embodiments may also include calculating a carrier to interference and noise ratio (CINR) of the signal. In several embodiments, the signal may represent the preamble of a wireless frame.

Abstract translation: 描述无线通信的方法和布置。 实施例包括转换，代码，状态机或用于从发射机接收表示已知符号序列的信号的其他逻辑。 信号可以在多个子信道上发送。 实施例还可以包括确定子信道处的信道响应并确定已知序列的接收。 确定可以包括以差分方式处理子信道处的信道响应以消除信道相位响应并获得信道幅度。 在一些实施例中，可以通过将表示子信道的接收的频域值乘以相邻子信道的频域值的复共轭来执行抵消。 许多实施例还可以包括计算信号的载波与干扰和噪声比（CINR）。 在几个实施例中，信号可以表示无线帧的前同步码。

公开(公告)号：US20070070932A1

公开(公告)日：2007-03-29

申请号：US11236520

申请日：2005-09-28

Applicant: Ayelet Doron ,  Yuval Lomnitz

Inventor： Ayelet Doron ,  Yuval Lomnitz

IPC: H04Q7/00

CPC classification number: H04L25/067

Abstract: Embodiments of the present invention provide a method, apparatus and system of interference mitigation in wireless communication. In some demonstrative embodiments the method may include determining one or more factors to be applied to one or more likelihood ratio values of one or more current symbols received by a station over one or more communication subcarriers, respectively, based on one or more sets of estimated error values, respectively, wherein the set of error values corresponds to a plurality of previous symbols received over the subcarrier. In some demonstrative embodiments the method may include determining the likelihood ratio value based on a probability that the current symbol includes interference caused by one or more other stations transmitting over the subcarrier. Other embodiments are described and claimed.

Abstract translation: 本发明的实施例提供了一种无线通信中的干扰减轻的方法，装置和系统。 在一些说明性实施例中，该方法可以包括基于一个或多个估计的集合来确定一个或多个要被应用于由一个或多个通信子载波上的站接收的一个或多个当前符号的似然比值的一个或多个似然比值 误差值，其中所述一组误差值对应于通过所述子载波接收的多个先前码元。 在一些说明性实施例中，该方法可以包括基于当前符号包括由一个或多个其它站在子载波上发送而引起的干扰的概率来确定似然比值。 描述和要求保护其他实施例。