公开(公告)号：US20150139367A1

公开(公告)日：2015-05-21

申请号：US14082877

申请日：2013-11-18

Applicant: QUALCOMM Incorporated

Inventor： Farrokh ABRISHAMKAR ,  Venkata Gautham Chavali ,  Insung Kang ,  Carlos Ruben Cabrera-Mercader ,  Hari Sankar ,  Aamod Dinkar Khandekar

IPC: H04L25/02

CPC classification number: H04L25/0256 ,  H04B1/71072 ,  H04L25/0204 ,  H04L25/025

Abstract: Apparatus and methods for channel estimation include determining two streams corresponding to odd and even samples of a received signal that is sampled at a first chip rate, performing least squares successive interference cancellation on each of the two streams to obtain odd and even raw channel estimates, interlacing the odd and even raw channel estimates to obtain interlaced channel estimates, interpolating additional samples in the interlaced channel estimates to create higher chip rate channel estimates, identifying a first set of tap positions based on the higher chip rate channel estimates, applying matching pursuit to the first set of tap positions to identify a second set of tap positions, wherein the second set of tap positions includes fewer tap positions than the first set of tap positions, and determining a third set of tap positions by clustering each tap position included in the second set of tap positions.

Abstract translation: 用于信道估计的装置和方法包括确定对应于以第一码片速率采样的接收信号的奇数和偶数采样的两个流，对两个流中的每个流执行最小二乘法连续干扰消除以获得奇数和偶数原始信道估计， 将奇数和偶数原始信道估计交错以获得隔行信道估计，在隔行信道估计中内插附加采样以产生更高的码片速率信道估计，基于较高码片速率信道估计来识别第一组抽头位置，将匹配追踪应用于 所述第一抽头位置集合以识别第二组抽头位置，其中所述第二抽头位置集合包括比所述第一抽头位置集合更少的抽头位置，以及通过将包括在所述抽头位置中的每个抽头位置聚类来确定第三抽头位置集合 第二组抽头位置。

公开(公告)号：US20150139368A1

公开(公告)日：2015-05-21

申请号：US14082884

申请日：2013-11-18

Applicant: QUALCOMM Incorporated

Inventor： Farrokh ABRISHAMKAR ,  Venkata Gautham Chavali ,  Insung Kang ,  Bahadir Canpolat

IPC: H04L25/02

CPC classification number: H04L25/025 ,  H04B1/71072 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/0232

Abstract: Apparatus and methods for channel estimation in time division synchronous code division multiple access (TD-SCDMA) based on a signal received from one or more Node Bs include determining least squares channel metric estimates based on the received signal, identifying signal taps and noise taps in a tapped delay line channel estimate based on at least one of temporal correlations of the least squares channel metric estimates or composite hypothesis testing on the least squares channel metric estimates, and updating an interference buffer based on the signal taps and the noise taps.

Abstract translation: 基于从一个或多个节点B接收的信号的时分同步码分多址（TD-SCDMA）中的信道估计的装置和方法包括基于接收信号确定最小二乘信道度量估计，识别信号抽头和噪声抽头 基于所述最小二乘信道度量估计或所述最小二乘信道度量估计上的综合假设检验的时间相关性中的至少一个，以及基于所述信号抽头和所述噪声抽头来更新干扰缓冲器的抽头延迟线信道估计。