公开(公告)号：US20010017883A1

公开(公告)日：2001-08-30

申请号：US09821931

申请日：2001-03-30

Applicant: Nokia Networks Oy

Inventor： Esa Tiirola ,  Juha Ylitalo

IPC: H04B001/707

CPC classification number: H04B7/0897 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/712 ,  H04B7/0851 ,  H04B7/0857 ,  H04B2201/70701 ,  H04B2201/709727

Abstract: The invention relates to a Rake receiver of a CDMA system using IRC. The Rake receiver comprises at least two antenna branches, at least one Rake finger, and a delay estimator. The delay estimator comprises a despreader and an allocator for selecting at least one delay, and allocating a Rake finger for processing the signal component found by informing the Rake finger of the delay found. The delay estimator further comprises: a channel estimator, an interference estimator for generating an interference signal, a weighting coefficient part for providing each antenna branch with weighting coefficients maximizing the Signal-to-Interference-and-Noise Ratio, a multiplier for multiplying the pilot part by a weighting coefficient, and an antenna branch summer for combining the despread pilot parts, received via the separate antenna branches and multiplied by the weighting coefficient, to one combined pilot signal, on which combined pilot signal the selection is based in the allocator.

Abstract translation: 本发明涉及使用IRC的CDMA系统的Rake接收机。 耙式接收机包括至少两个天线分支，至少一个耙指和延迟估计器。 延迟估计器包括解扩器和用于选择至少一个延迟的分配器，并且分配耙指以处理通过向耙指通知发现的延迟所发现的信号分量。 延迟估计器还包括：信道估计器，用于产生干扰信号的干扰估计器，用于向每个天线分支提供最大化信噪比噪声比的加权系数的加权系数部分，用于将导频 部分乘以加权系数，以及天线分支加法器，用于将经由分离的天线分支接收并乘以加权系数的解扩导频部分组合到一个组合导频信号，组合导频信号选择基于分配器。